31688034 has 32 divisors (see below), whose sum is σ = 76692096. Its totient is φ = 8520960.

The previous prime is 31688023. The next prime is 31688071. The reversal of 31688034 is 43088613.

It is a junction number, because it is equal to n+sod(n) for n = 31687986 and 31688004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21477 + ... + 22904.

It is an arithmetic number, because the mean of its divisors is an integer number (2396628).

Almost surely, 2^31688034 is an apocalyptic number.

31688034 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31688034 is an abundant number, since it is smaller than the sum of its proper divisors (45004062).

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

31688034 is a wasteful number, since it uses less digits than its factorization.

31688034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 31688034 is about 5629.2125559442. The cubic root of 31688034 is about 316.4451412198.

The spelling of 31688034 in words is "thirty-one million, six hundred eighty-eight thousand, thirty-four".