72312379 has 2 divisors, whose sum is σ = 72312380. Its totient is φ = 72312378.

The previous prime is 72312353. The next prime is 72312521. The reversal of 72312379 is 97321327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72312379 - 2¹¹ = 72310331 is a prime.

It is not a weakly prime, because it can be changed into another prime (72312329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36156189 + 36156190.

It is an arithmetic number, because the mean of its divisors is an integer number (36156190).

Almost surely, 2^72312379 is an apocalyptic number.

72312379 is a deficient number, since it is larger than the sum of its proper divisors (1).

72312379 is an equidigital number, since it uses as much as digits as its factorization.

72312379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 34.

The square root of 72312379 is about 8503.6685612740. The cubic root of 72312379 is about 416.6175396657.

The spelling of 72312379 in words is "seventy-two million, three hundred twelve thousand, three hundred seventy-nine".