23004152531 has 32 divisors (see below), whose sum is σ = 25986199680. Its totient is φ = 20256768000.

The previous prime is 23004152527. The next prime is 23004152617. The reversal of 23004152531 is 13525140032.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23004152531 - 2² = 23004152527 is a prime.

It is a super-2 number, since 2×23004152531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23004152531.

It is not an unprimeable number, because it can be changed into a prime (23004142531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3048395 + ... + 3055931.

It is an arithmetic number, because the mean of its divisors is an integer number (812068740).

Almost surely, 2^23004152531 is an apocalyptic number.

23004152531 is a deficient number, since it is larger than the sum of its proper divisors (2982047149).

23004152531 is a wasteful number, since it uses less digits than its factorization.

23004152531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 23004152531 its reverse (13525140032), we get a palindrome (36529292563).

The spelling of 23004152531 in words is "twenty-three billion, four million, one hundred fifty-two thousand, five hundred thirty-one".