431012988 has 72 divisors (see below), whose sum is σ = 1291285632. Its totient is φ = 123144624.

The previous prime is 431012987. The next prime is 431012999. The reversal of 431012988 is 889210134.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431012987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24870 + ... + 38477.

Almost surely, 2^431012988 is an apocalyptic number.

It is an amenable number.

431012988 is an abundant number, since it is smaller than the sum of its proper divisors (860272644).

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

431012988 is a wasteful number, since it uses less digits than its factorization.

431012988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63373 (or 63359 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 431012988 is about 20760.8522946434. The cubic root of 431012988 is about 755.3764699963.

The spelling of 431012988 in words is "four hundred thirty-one million, twelve thousand, nine hundred eighty-eight".