23011316512 has 12 divisors (see below), whose sum is σ = 45303529446. Its totient is φ = 11505658240.

The previous prime is 23011316477. The next prime is 23011316551. The reversal of 23011316512 is 21561311032.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15345263376 + 7666053136 = 123876^2 + 87556^2 .

It is a super-2 number, since 2×23011316512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359551789 + ... + 359551852.

Almost surely, 2^23011316512 is an apocalyptic number.

It is an amenable number.

23011316512 is a deficient number, since it is larger than the sum of its proper divisors (22292212934).

23011316512 is an equidigital number, since it uses as much as digits as its factorization.

23011316512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719103651 (or 719103643 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 23011316512 its reverse (21561311032), we get a palindrome (44572627544).

The spelling of 23011316512 in words is "twenty-three billion, eleven million, three hundred sixteen thousand, five hundred twelve".