949315931 has 4 divisors (see below), whose sum is σ = 950670864. Its totient is φ = 947961000.

The previous prime is 949315907. The next prime is 949315951. The reversal of 949315931 is 139513949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139513949 = 367 ⋅380147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949315931 is a prime.

It is a super-2 number, since 2×949315931² = 1802401473700793522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (949315901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676415 + ... + 677816.

It is an arithmetic number, because the mean of its divisors is an integer number (237667716).

Almost surely, 2^949315931 is an apocalyptic number.

949315931 is a deficient number, since it is larger than the sum of its proper divisors (1354933).

949315931 is a wasteful number, since it uses less digits than its factorization.

949315931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354932.

The product of its digits is 131220, while the sum is 44.

The square root of 949315931 is about 30810.9709519191. The cubic root of 949315931 is about 982.8115606164.

The spelling of 949315931 in words is "nine hundred forty-nine million, three hundred fifteen thousand, nine hundred thirty-one".