31313494 has 8 divisors (see below), whose sum is σ = 47018088. Its totient is φ = 15640800.

The previous prime is 31313489. The next prime is 31313509. The reversal of 31313494 is 49431313.

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

It is a super-3 number, since 3×31313494³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5347 + ... + 9550.

It is an arithmetic number, because the mean of its divisors is an integer number (5877261).

Almost surely, 2^31313494 is an apocalyptic number.

31313494 is a deficient number, since it is larger than the sum of its proper divisors (15704594).

31313494 is a wasteful number, since it uses less digits than its factorization.

31313494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15950.

The product of its digits is 3888, while the sum is 28.

The square root of 31313494 is about 5595.8461379849. The cubic root of 31313494 is about 315.1934446295.

The spelling of 31313494 in words is "thirty-one million, three hundred thirteen thousand, four hundred ninety-four".