31264379 has 2 divisors, whose sum is σ = 31264380. Its totient is φ = 31264378.

The previous prime is 31264351. The next prime is 31264403. The reversal of 31264379 is 97346213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31264379 - 2²⁰ = 30215803 is a prime.

It is a super-2 number, since 2×31264379² = 1954922788511282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31264339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15632189 + 15632190.

It is an arithmetic number, because the mean of its divisors is an integer number (15632190).

Almost surely, 2^31264379 is an apocalyptic number.

31264379 is a deficient number, since it is larger than the sum of its proper divisors (1).

31264379 is an equidigital number, since it uses as much as digits as its factorization.

31264379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 31264379 is about 5591.4558926991. The cubic root of 31264379 is about 315.0285654787.

The spelling of 31264379 in words is "thirty-one million, two hundred sixty-four thousand, three hundred seventy-nine".