31900074 has 8 divisors (see below), whose sum is σ = 63800160. Its totient is φ = 10633356.

The previous prime is 31900067. The next prime is 31900081. The reversal of 31900074 is 47000913.

It is an interprime number because it is at equal distance from previous prime (31900067) and next prime (31900081).

It is a sphenic number, since it is the product of 3 distinct primes.

31900074 is an admirable number.

It is a super-2 number, since 2×31900074² = 2035229442410952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658334 + ... + 2658345.

It is an arithmetic number, because the mean of its divisors is an integer number (7975020).

Almost surely, 2^31900074 is an apocalyptic number.

31900074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31900074 is a wasteful number, since it uses less digits than its factorization.

31900074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316684.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 31900074 is about 5648.0150495550. The cubic root of 31900074 is about 317.1494019891.

Adding to 31900074 its reverse (47000913), we get a palindrome (78900987).

The spelling of 31900074 in words is "thirty-one million, nine hundred thousand, seventy-four".