722131115 has 32 divisors (see below), whose sum is σ = 924797952. Its totient is φ = 540144000.

The previous prime is 722131103. The next prime is 722131127. The reversal of 722131115 is 511131227.

722131115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (722131103) and next prime (722131127).

It is not a de Polignac number, because 722131115 - 2⁶ = 722131051 is a prime.

It is a super-2 number, since 2×722131115² = 1042946694502286450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2181500 + ... + 2181830.

It is an arithmetic number, because the mean of its divisors is an integer number (28899936).

Almost surely, 2^722131115 is an apocalyptic number.

722131115 is a deficient number, since it is larger than the sum of its proper divisors (202666837).

722131115 is a wasteful number, since it uses less digits than its factorization.

722131115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 420, while the sum is 23.

The square root of 722131115 is about 26872.4973718484. The cubic root of 722131115 is about 897.1643735398.

The spelling of 722131115 in words is "seven hundred twenty-two million, one hundred thirty-one thousand, one hundred fifteen".