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23021030121231 = 3234360112910193
BaseRepresentation
bin1010011110000000000000…
…10100101001111100001111
310000111210022011121122000210
411033000000110221330033
511004134032202334411
6120543414254053503
74564133405245542
oct517000024517417
9100453264548023
1023021030121231
11737618938a09a
1226b97684aa293
13cacb48a4394c
1459831c188859
1529dc6a9c6ca6
hex14f000529f0f

23021030121231 has 32 divisors (see below), whose sum is σ = 32828660992512. Its totient is φ = 14314820889600.

The previous prime is 23021030121163. The next prime is 23021030121233. The reversal of 23021030121231 is 13212103012032.

It is not a de Polignac number, because 23021030121231 - 211 = 23021030119183 is a prime.

It is a super-2 number, since 2×230210301212312 (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23021030121198 and 23021030121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021030121233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4671930 + ... + 8238263.

It is an arithmetic number, because the mean of its divisors is an integer number (1025895656016).

Almost surely, 223021030121231 is an apocalyptic number.

23021030121231 is a deficient number, since it is larger than the sum of its proper divisors (9807630871281).

23021030121231 is a wasteful number, since it uses less digits than its factorization.

23021030121231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12910863.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 23021030121231 its reverse (13212103012032), we get a palindrome (36233133133263).

The spelling of 23021030121231 in words is "twenty-three trillion, twenty-one billion, thirty million, one hundred twenty-one thousand, two hundred thirty-one".

Divisors: 1 3 23 43 69 129 601 989 1803 2967 13823 25843 41469 77529 594389 1783167 12910193 38730579 296934439 555138299 890803317 1665414897 7759025993 12768180877 23277077979 38304542631 178457597839 333638117699 535372793517 1000914353097 7673676707077 23021030121231