31338871 has 6 divisors (see below), whose sum is σ = 33291080. Its totient is φ = 29495136.

The previous prime is 31338863. The next prime is 31338899. The reversal of 31338871 is 17883313.

It is not a de Polignac number, because 31338871 - 2³ = 31338863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31338851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53931 + ... + 54508.

Almost surely, 2^31338871 is an apocalyptic number.

31338871 is a deficient number, since it is larger than the sum of its proper divisors (1952209).

31338871 is a wasteful number, since it uses less digits than its factorization.

31338871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108473 (or 108456 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 31338871 is about 5598.1131642724. The cubic root of 31338871 is about 315.2785677212.

The spelling of 31338871 in words is "thirty-one million, three hundred thirty-eight thousand, eight hundred seventy-one".