23131433312 has 24 divisors (see below), whose sum is σ = 49043087856. Its totient is φ = 10676045952.

The previous prime is 23131433279. The next prime is 23131433329. The reversal of 23131433312 is 21333413132.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 27801788 + ... + 27802619.

It is an arithmetic number, because the mean of its divisors is an integer number (2043461994).

Almost surely, 2^23131433312 is an apocalyptic number.

It is an amenable number.

23131433312 is an abundant number, since it is smaller than the sum of its proper divisors (25911654544).

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

23131433312 is a wasteful number, since it uses less digits than its factorization.

23131433312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55604430 (or 55604422 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 23131433312 its reverse (21333413132), we get a palindrome (44464846444).

The spelling of 23131433312 in words is "twenty-three billion, one hundred thirty-one million, four hundred thirty-three thousand, three hundred twelve".