31299994 has 8 divisors (see below), whose sum is σ = 51218208. Its totient is φ = 14227260.

The previous prime is 31299971. The next prime is 31299997. The reversal of 31299994 is 49999213.

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

It is not an unprimeable number, because it can be changed into a prime (31299997) 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, 711342 + ... + 711385.

It is an arithmetic number, because the mean of its divisors is an integer number (6402276).

Almost surely, 2^31299994 is an apocalyptic number.

31299994 is a deficient number, since it is larger than the sum of its proper divisors (19918214).

31299994 is a wasteful number, since it uses less digits than its factorization.

31299994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422740.

The product of its digits is 157464, while the sum is 46.

The square root of 31299994 is about 5594.6397560522. The cubic root of 31299994 is about 315.1481422949.

The spelling of 31299994 in words is "thirty-one million, two hundred ninety-nine thousand, nine hundred ninety-four".