31679499 has 4 divisors (see below), whose sum is σ = 42239336. Its totient is φ = 21119664.

The previous prime is 31679497. The next prime is 31679503. The reversal of 31679499 is 99497613.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31679499 - 2¹ = 31679497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31679491) 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, 5279914 + ... + 5279919.

It is an arithmetic number, because the mean of its divisors is an integer number (10559834).

Almost surely, 2^31679499 is an apocalyptic number.

31679499 is a deficient number, since it is larger than the sum of its proper divisors (10559837).

31679499 is a wasteful number, since it uses less digits than its factorization.

31679499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559836.

The product of its digits is 367416, while the sum is 48.

The square root of 31679499 is about 5628.4544059626. The cubic root of 31679499 is about 316.4167277414.

The spelling of 31679499 in words is "thirty-one million, six hundred seventy-nine thousand, four hundred ninety-nine".