31994958 has 16 divisors (see below), whose sum is σ = 64242000. Its totient is φ = 10622976.

The previous prime is 31994957. The next prime is 31994959. The reversal of 31994958 is 85949913.

It is an interprime number because it is at equal distance from previous prime (31994957) and next prime (31994959).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31994953) 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, 8833 + ... + 11916.

It is an arithmetic number, because the mean of its divisors is an integer number (4015125).

Almost surely, 2^31994958 is an apocalyptic number.

31994958 is an abundant number, since it is smaller than the sum of its proper divisors (32247042).

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

31994958 is a wasteful number, since it uses less digits than its factorization.

31994958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21011.

The product of its digits is 349920, while the sum is 48.

The square root of 31994958 is about 5656.4085778876. The cubic root of 31994958 is about 317.4635351926.

The spelling of 31994958 in words is "thirty-one million, nine hundred ninety-four thousand, nine hundred fifty-eight".