23131422232540 has 12 divisors (see below), whose sum is σ = 48575986688376. Its totient is φ = 9252568893008.

The previous prime is 23131422232511. The next prime is 23131422232559. The reversal of 23131422232540 is 4523222413132.

It is a junction number, because it is equal to n+sod(n) for n = 23131422232496 and 23131422232505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578285555794 + ... + 578285555833.

It is an arithmetic number, because the mean of its divisors is an integer number (4047998890698).

Almost surely, 2^{23131422232540} is an apocalyptic number.

23131422232540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131422232540 is an abundant number, since it is smaller than the sum of its proper divisors (25444564455836).

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

23131422232540 is a wasteful number, since it uses less digits than its factorization.

23131422232540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156571111636 (or 1156571111634 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 23131422232540 its reverse (4523222413132), we get a palindrome (27654644645672).

The spelling of 23131422232540 in words is "twenty-three trillion, one hundred thirty-one billion, four hundred twenty-two million, two hundred thirty-two thousand, five hundred forty".