722903231 has 2 divisors, whose sum is σ = 722903232. Its totient is φ = 722903230.

The previous prime is 722903219. The next prime is 722903239. The reversal of 722903231 is 132309227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722903231 - 2¹⁴ = 722886847 is a prime.

It is a super-3 number, since 3×722903231³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 722903194 and 722903203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722903239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361451615 + 361451616.

It is an arithmetic number, because the mean of its divisors is an integer number (361451616).

Almost surely, 2^722903231 is an apocalyptic number.

722903231 is a deficient number, since it is larger than the sum of its proper divisors (1).

722903231 is an equidigital number, since it uses as much as digits as its factorization.

722903231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 722903231 is about 26886.8598203658. The cubic root of 722903231 is about 897.4840145817.

The spelling of 722903231 in words is "seven hundred twenty-two million, nine hundred three thousand, two hundred thirty-one".