31358968 has 32 divisors (see below), whose sum is σ = 62524800. Its totient is φ = 14702688.

The previous prime is 31358933. The next prime is 31358983. The reversal of 31358968 is 86985313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14655 + ... + 16657.

It is an arithmetic number, because the mean of its divisors is an integer number (1953900).

Almost surely, 2^31358968 is an apocalyptic number.

31358968 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31358968 is a deficient number, since it is larger than the sum of its proper divisors (31165832).

31358968 is a wasteful number, since it uses less digits than its factorization.

31358968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2127 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 31358968 is about 5599.9078563848. The cubic root of 31358968 is about 315.3459472963.

The spelling of 31358968 in words is "thirty-one million, three hundred fifty-eight thousand, nine hundred sixty-eight".