31294079 has 2 divisors, whose sum is σ = 31294080. Its totient is φ = 31294078.

The previous prime is 31294069. The next prime is 31294117. The reversal of 31294079 is 97049213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31294079 - 2²⁴ = 14516863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31294019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15647039 + 15647040.

It is an arithmetic number, because the mean of its divisors is an integer number (15647040).

Almost surely, 2^31294079 is an apocalyptic number.

31294079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31294079 is an equidigital number, since it uses as much as digits as its factorization.

31294079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 31294079 is about 5594.1111000766. Note that the first 4 decimals coincide. The cubic root of 31294079 is about 315.1282890569.

The spelling of 31294079 in words is "thirty-one million, two hundred ninety-four thousand, seventy-nine".