31230079 has 2 divisors, whose sum is σ = 31230080. Its totient is φ = 31230078.

The previous prime is 31230077. The next prime is 31230163. The reversal of 31230079 is 97003213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31230079 - 2¹ = 31230077 is a prime.

Together with 31230077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31230077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615039 + 15615040.

It is an arithmetic number, because the mean of its divisors is an integer number (15615040).

Almost surely, 2^31230079 is an apocalyptic number.

31230079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230079 is an equidigital number, since it uses as much as digits as its factorization.

31230079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 31230079 is about 5588.3878712917. The cubic root of 31230079 is about 314.9133178806.

The spelling of 31230079 in words is "thirty-one million, two hundred thirty thousand, seventy-nine".