23031215451 has 12 divisors (see below), whose sum is σ = 33272623800. Its totient is φ = 15351691680.

The previous prime is 23031215437. The next prime is 23031215461. The reversal of 23031215451 is 15451213032.

It is not a de Polignac number, because 23031215451 - 2²³ = 23022826843 is a prime.

It is a super-2 number, since 2×23031215451² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23031215411) 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 11 ways as a sum of consecutive naturals, for example, 143901 + ... + 258398.

It is an arithmetic number, because the mean of its divisors is an integer number (2772718650).

Almost surely, 2^23031215451 is an apocalyptic number.

23031215451 is a deficient number, since it is larger than the sum of its proper divisors (10241408349).

23031215451 is a wasteful number, since it uses less digits than its factorization.

23031215451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408666 (or 408663 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 23031215451 its reverse (15451213032), we get a palindrome (38482428483).

The spelling of 23031215451 in words is "twenty-three billion, thirty-one million, two hundred fifteen thousand, four hundred fifty-one".