23131340344 has 32 divisors (see below), whose sum is σ = 50407286400. Its totient is φ = 9745405920.

The previous prime is 23131340341. The next prime is 23131340369. The reversal of 23131340344 is 44304313132.

It is a super-2 number, since 2×23131340344² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131340341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497202 + ... + 3503809.

It is an arithmetic number, because the mean of its divisors is an integer number (1575227700).

Almost surely, 2^23131340344 is an apocalyptic number.

It is an amenable number.

23131340344 is an abundant number, since it is smaller than the sum of its proper divisors (27275946056).

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

23131340344 is a wasteful number, since it uses less digits than its factorization.

23131340344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001083 (or 7001079 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 23131340344 its reverse (44304313132), we get a palindrome (67435653476).

The spelling of 23131340344 in words is "twenty-three billion, one hundred thirty-one million, three hundred forty thousand, three hundred forty-four".