31214879 has 4 divisors (see below), whose sum is σ = 31229184. Its totient is φ = 31200576.

The previous prime is 31214867. The next prime is 31214903. The reversal of 31214879 is 97841213.

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

It is a cyclic number.

It is not a de Polignac number, because 31214879 - 2¹² = 31210783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214809) 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, 3122 + ... + 8495.

It is an arithmetic number, because the mean of its divisors is an integer number (7807296).

Almost surely, 2^31214879 is an apocalyptic number.

31214879 is a deficient number, since it is larger than the sum of its proper divisors (14305).

31214879 is a wasteful number, since it uses less digits than its factorization.

31214879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304.

The product of its digits is 12096, while the sum is 35.

The square root of 31214879 is about 5587.0277429059. The cubic root of 31214879 is about 314.8622190749.

It can be divided in two parts, 3121 and 4879, that added together give a cube (8000 = 20³).

The spelling of 31214879 in words is "thirty-one million, two hundred fourteen thousand, eight hundred seventy-nine".