23431187188420 has 24 divisors (see below), whose sum is σ = 53678719741248. Its totient is φ = 8520431704800.

The previous prime is 23431187188399. The next prime is 23431187188463. The reversal of 23431187188420 is 2488178113432.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53252697936 + ... + 53252698375.

It is an arithmetic number, because the mean of its divisors is an integer number (2236613322552).

Almost surely, 2^{23431187188420} is an apocalyptic number.

23431187188420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23431187188420 is an abundant number, since it is smaller than the sum of its proper divisors (30247532552828).

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

23431187188420 is a wasteful number, since it uses less digits than its factorization.

23431187188420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106505396331 (or 106505396329 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 23431187188420 in words is "twenty-three trillion, four hundred thirty-one billion, one hundred eighty-seven million, one hundred eighty-eight thousand, four hundred twenty".