23131311302 has 24 divisors (see below), whose sum is σ = 38283105168. Its totient is φ = 10474225520.

The previous prime is 23131311299. The next prime is 23131311331. The reversal of 23131311302 is 20311313132.

It is a congruent number.

It is an unprimeable number.

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, 118073 + ... + 245364.

It is an arithmetic number, because the mean of its divisors is an integer number (1595129382).

Almost surely, 2^23131311302 is an apocalyptic number.

23131311302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23131311302 is a deficient number, since it is larger than the sum of its proper divisors (15151793866).

23131311302 is a wasteful number, since it uses less digits than its factorization.

23131311302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363724 (or 363713 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23131311302 its reverse (20311313132), we get a palindrome (43442624434).

It can be divided in two parts, 23131 and 311302, that added together give a palindrome (334433).

The spelling of 23131311302 in words is "twenty-three billion, one hundred thirty-one million, three hundred eleven thousand, three hundred two".