31113693 has 16 divisors (see below), whose sum is σ = 49640640. Its totient is φ = 19146672.

The previous prime is 31113653. The next prime is 31113713. The reversal of 31113693 is 39631113.

It is not a de Polignac number, because 31113693 - 2¹⁷ = 30982621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43971 + ... + 44672.

It is an arithmetic number, because the mean of its divisors is an integer number (3102540).

Almost surely, 2^31113693 is an apocalyptic number.

It is an amenable number.

31113693 is a deficient number, since it is larger than the sum of its proper divisors (18526947).

31113693 is a wasteful number, since it uses less digits than its factorization.

31113693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88665 (or 88659 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 31113693 is about 5577.9649514854. The cubic root of 31113693 is about 314.5216321816.

The spelling of 31113693 in words is "thirty-one million, one hundred thirteen thousand, six hundred ninety-three".