23004131556 has 24 divisors (see below), whose sum is σ = 61344351040. Its totient is φ = 6572608992.

The previous prime is 23004131537. The next prime is 23004131561. The reversal of 23004131556 is 65513140032.

It is a super-2 number, since 2×23004131556² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136929271 + ... + 136929438.

Almost surely, 2^23004131556 is an apocalyptic number.

It is an amenable number.

23004131556 is an abundant number, since it is smaller than the sum of its proper divisors (38340219484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23004131556 is a wasteful number, since it uses less digits than its factorization.

23004131556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273858723 (or 273858721 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 23004131556 its reverse (65513140032), we get a palindrome (88517271588).

The spelling of 23004131556 in words is "twenty-three billion, four million, one hundred thirty-one thousand, five hundred fifty-six".