23123231420 has 48 divisors (see below), whose sum is σ = 51134781600. Its totient is φ = 8759013120.

The previous prime is 23123231399. The next prime is 23123231429. The reversal of 23123231420 is 2413232132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123231429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076546 + ... + 1097814.

It is an arithmetic number, because the mean of its divisors is an integer number (1065307950).

Almost surely, 2^23123231420 is an apocalyptic number.

23123231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23123231420 is an abundant number, since it is smaller than the sum of its proper divisors (28011550180).

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

23123231420 is a wasteful number, since it uses less digits than its factorization.

23123231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24158 (or 24156 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 23123231420 its reverse (2413232132), we get a palindrome (25536463552).

The spelling of 23123231420 in words is "twenty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, four hundred twenty".