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20013232131223 = 61328085772643
BaseRepresentation
bin1001000110011101100011…
…00101111000110010010111
32121212020122120001102021221
410203032301211320302113
510110344044411144343
6110321541340351211
74133623356206632
oct443166145706227
977766576042257
1020013232131223
116416622881081
1222b2846b45507
13b223167aca96
144d2907770c19
1524a8cb88c5ed
hex1233b1978c97

20013232131223 has 4 divisors (see below), whose sum is σ = 20341317903928. Its totient is φ = 19685146358520.

The previous prime is 20013232131149. The next prime is 20013232131227. The reversal of 20013232131223 is 32213123231002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20013232131223 - 221 = 20013230034071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013232131227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164042886261 + ... + 164042886382.

It is an arithmetic number, because the mean of its divisors is an integer number (5085329475982).

Almost surely, 220013232131223 is an apocalyptic number.

20013232131223 is a deficient number, since it is larger than the sum of its proper divisors (328085772705).

20013232131223 is an equidigital number, since it uses as much as digits as its factorization.

20013232131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328085772704.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20013232131223 its reverse (32213123231002), we get a palindrome (52226355362225).

The spelling of 20013232131223 in words is "twenty trillion, thirteen billion, two hundred thirty-two million, one hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 61 328085772643 20013232131223