722862731 has 2 divisors, whose sum is σ = 722862732. Its totient is φ = 722862730.

The previous prime is 722862727. The next prime is 722862769. The reversal of 722862731 is 137268227.

It is an a-pointer prime, because the next prime (722862769) can be obtained adding 722862731 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722862731 - 2² = 722862727 is a prime.

It is a super-2 number, since 2×722862731² = 1045061055737556722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722862781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361431365 + 361431366.

It is an arithmetic number, because the mean of its divisors is an integer number (361431366).

Almost surely, 2^722862731 is an apocalyptic number.

722862731 is a deficient number, since it is larger than the sum of its proper divisors (1).

722862731 is an equidigital number, since it uses as much as digits as its factorization.

722862731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 722862731 is about 26886.1066538091. The cubic root of 722862731 is about 897.4672540252.

The spelling of 722862731 in words is "seven hundred twenty-two million, eight hundred sixty-two thousand, seven hundred thirty-one".