72231263 has 4 divisors (see below), whose sum is σ = 77787528. Its totient is φ = 66675000.

The previous prime is 72231253. The next prime is 72231277. The reversal of 72231263 is 36213227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72231263 - 2¹⁸ = 71969119 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72231223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778113 + ... + 2778138.

It is an arithmetic number, because the mean of its divisors is an integer number (19446882).

Almost surely, 2^72231263 is an apocalyptic number.

72231263 is a deficient number, since it is larger than the sum of its proper divisors (5556265).

72231263 is a wasteful number, since it uses less digits than its factorization.

72231263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556264.

The product of its digits is 3024, while the sum is 26.

The square root of 72231263 is about 8498.8977520617. The cubic root of 72231263 is about 416.4617019290.

The spelling of 72231263 in words is "seventy-two million, two hundred thirty-one thousand, two hundred sixty-three".