72313263 has 16 divisors (see below), whose sum is σ = 116870400. Its totient is φ = 43826040.

The previous prime is 72313247. The next prime is 72313271. The reversal of 72313263 is 36231327.

It is not a de Polignac number, because 72313263 - 2⁴ = 72313247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72313063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121443 + ... + 122036.

It is an arithmetic number, because the mean of its divisors is an integer number (7304400).

Almost surely, 2^72313263 is an apocalyptic number.

72313263 is a deficient number, since it is larger than the sum of its proper divisors (44557137).

72313263 is a wasteful number, since it uses less digits than its factorization.

72313263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243499 (or 243493 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 72313263 is about 8503.7205386819. The cubic root of 72313263 is about 416.6192373391.

The spelling of 72313263 in words is "seventy-two million, three hundred thirteen thousand, two hundred sixty-three".