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23011030331 = 312578833271
BaseRepresentation
bin10101011011100100…
…000111010100111011
32012101200022110100122
4111123210013110323
5334111310432311
614323210123455
71443143346662
oct253344072473
965350273318
1023011030331
119839143743
12456242058b
1322294519a3
14118415ddd9
158ea28d0db
hex55b90753b

23011030331 has 16 divisors (see below), whose sum is σ = 23880050688. Its totient is φ = 22150195200.

The previous prime is 23011030309. The next prime is 23011030423. The reversal of 23011030331 is 13303011032.

It is a cyclic number.

It is not a de Polignac number, because 23011030331 - 230 = 21937288507 is a prime.

It is a super-2 number, since 2×230110303312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23011030531) 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 15 ways as a sum of consecutive naturals, for example, 7033226 + ... + 7036496.

It is an arithmetic number, because the mean of its divisors is an integer number (1492503168).

Almost surely, 223011030331 is an apocalyptic number.

23011030331 is a deficient number, since it is larger than the sum of its proper divisors (869020357).

23011030331 is a wasteful number, since it uses less digits than its factorization.

23011030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 23011030331 its reverse (13303011032), we get a palindrome (36314041363).

The spelling of 23011030331 in words is "twenty-three billion, eleven million, thirty thousand, three hundred thirty-one".

Divisors: 1 31 257 883 3271 7967 27373 101401 226931 840647 2888293 7034861 26060057 89537083 742291301 23011030331