31486379 has 8 divisors (see below), whose sum is σ = 33176832. Its totient is φ = 29822760.

The previous prime is 31486349. The next prime is 31486387. The reversal of 31486379 is 97368413.

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

It is a cyclic number.

It is not a de Polignac number, because 31486379 - 2⁸ = 31486123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31486339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4277 + ... + 9014.

It is an arithmetic number, because the mean of its divisors is an integer number (4147104).

Almost surely, 2^31486379 is an apocalyptic number.

31486379 is a deficient number, since it is larger than the sum of its proper divisors (1690453).

31486379 is a wasteful number, since it uses less digits than its factorization.

31486379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13417.

The product of its digits is 108864, while the sum is 41.

The square root of 31486379 is about 5611.2724938288. The cubic root of 31486379 is about 315.7724520850.

The spelling of 31486379 in words is "thirty-one million, four hundred eighty-six thousand, three hundred seventy-nine".