31007949 has 16 divisors (see below), whose sum is σ = 50030208. Its totient is φ = 16676352.

The previous prime is 31007941. The next prime is 31007953. The reversal of 31007949 is 94970013.

It is not a de Polignac number, because 31007949 - 2³ = 31007941 is a prime.

It is a super-2 number, since 2×31007949² = 1922985802373202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31007941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43072 + ... + 43785.

It is an arithmetic number, because the mean of its divisors is an integer number (3126888).

Almost surely, 2^31007949 is an apocalyptic number.

It is an amenable number.

31007949 is a deficient number, since it is larger than the sum of its proper divisors (19022259).

31007949 is a wasteful number, since it uses less digits than its factorization.

31007949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86884.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 31007949 is about 5568.4781583481. The cubic root of 31007949 is about 314.1649133045.

The spelling of 31007949 in words is "thirty-one million, seven thousand, nine hundred forty-nine".