722931 has 16 divisors (see below), whose sum is σ = 1107840. Its totient is φ = 414720.

The previous prime is 722921. The next prime is 722933. The reversal of 722931 is 139227.

It is not a de Polignac number, because 722931 - 2⁵ = 722899 is a prime.

It is a super-2 number, since 2×722931² = 1045258461522, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722931.

It is not an unprimeable number, because it can be changed into a prime (722933) 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, 51 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (69240).

2⁷²²⁹³¹ is an apocalyptic number.

722931 is a deficient number, since it is larger than the sum of its proper divisors (384909).

722931 is a wasteful number, since it uses less digits than its factorization.

722931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its digits is 756, while the sum is 24.

The square root of 722931 is about 850.2534916129. The cubic root of 722931 is about 89.7495506168.

It can be divided in two parts, 7229 and 31, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 722931 in words is "seven hundred twenty-two thousand, nine hundred thirty-one".