43631312136 has 32 divisors (see below), whose sum is σ = 109099612800. Its totient is φ = 14540926400.

The previous prime is 43631312117. The next prime is 43631312159. The reversal of 43631312136 is 63121313634.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 43631312097 and 43631312106.

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, 50640 + ... + 299711.

It is an arithmetic number, because the mean of its divisors is an integer number (3409362900).

Almost surely, 2^43631312136 is an apocalyptic number.

It is an amenable number.

43631312136 is an abundant number, since it is smaller than the sum of its proper divisors (65468300664).

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

43631312136 is a wasteful number, since it uses less digits than its factorization.

43631312136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355549 (or 355545 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The spelling of 43631312136 in words is "forty-three billion, six hundred thirty-one million, three hundred twelve thousand, one hundred thirty-six".