722272131 has 24 divisors (see below), whose sum is σ = 1230787584. Its totient is φ = 399412080.

The previous prime is 722272097. The next prime is 722272139. The reversal of 722272131 is 131272227.

It is not a de Polignac number, because 722272131 - 2⁹ = 722271619 is a prime.

It is a super-2 number, since 2×722272131² = 1043354062438562322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722272095 and 722272104.

It is not an unprimeable number, because it can be changed into a prime (722272139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182961 + ... + 186866.

It is an arithmetic number, because the mean of its divisors is an integer number (51282816).

Almost surely, 2^722272131 is an apocalyptic number.

722272131 is a deficient number, since it is larger than the sum of its proper divisors (508515453).

722272131 is a wasteful number, since it uses less digits than its factorization.

722272131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369871 (or 369868 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 722272131 is about 26875.1210415879. The cubic root of 722272131 is about 897.2227684279. Note that the first 3 decimals are identical.

The spelling of 722272131 in words is "seven hundred twenty-two million, two hundred seventy-two thousand, one hundred thirty-one".