23131640654 has 16 divisors (see below), whose sum is σ = 35313287040. Its totient is φ = 11360853240.

The previous prime is 23131640641. The next prime is 23131640657. The reversal of 23131640654 is 45604613132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131640657) 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, 74999 + ... + 227789.

It is an arithmetic number, because the mean of its divisors is an integer number (2207080440).

Almost surely, 2^23131640654 is an apocalyptic number.

23131640654 is a deficient number, since it is larger than the sum of its proper divisors (12181646386).

23131640654 is a wasteful number, since it uses less digits than its factorization.

23131640654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154135.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 23131640654 in words is "twenty-three billion, one hundred thirty-one million, six hundred forty thousand, six hundred fifty-four".