31438968 has 32 divisors (see below), whose sum is σ = 85743360. Its totient is φ = 9526880.

The previous prime is 31438963. The next prime is 31438993. The reversal of 31438968 is 86983413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31438963) 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, 59280 + ... + 59807.

It is an arithmetic number, because the mean of its divisors is an integer number (2679480).

Almost surely, 2^31438968 is an apocalyptic number.

It is an amenable number.

31438968 is an abundant number, since it is smaller than the sum of its proper divisors (54304392).

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

31438968 is a wasteful number, since it uses less digits than its factorization.

31438968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119107 (or 119103 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 31438968 is about 5607.0462812429. The cubic root of 31438968 is about 315.6138797245.

The spelling of 31438968 in words is "thirty-one million, four hundred thirty-eight thousand, nine hundred sixty-eight".