15212331023 has 4 divisors (see below), whose sum is σ = 15212967120. Its totient is φ = 15211694928.

The previous prime is 15212331007. The next prime is 15212331041. The reversal of 15212331023 is 32013321251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15212331023 - 2⁴ = 15212331007 is a prime.

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 15212331023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15212331053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280715 + ... + 330492.

It is an arithmetic number, because the mean of its divisors is an integer number (3803241780).

Almost surely, 2^15212331023 is an apocalyptic number.

15212331023 is a deficient number, since it is larger than the sum of its proper divisors (636097).

15212331023 is an equidigital number, since it uses as much as digits as its factorization.

15212331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636096.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 15212331023 its reverse (32013321251), we get a palindrome (47225652274).

The spelling of 15212331023 in words is "fifteen billion, two hundred twelve million, three hundred thirty-one thousand, twenty-three".