724219313 has 2 divisors, whose sum is σ = 724219314. Its totient is φ = 724219312.

The previous prime is 724219297. The next prime is 724219319. The reversal of 724219313 is 313912427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 721620769 + 2598544 = 26863^2 + 1612^2 .

It is a cyclic number.

It is not a de Polignac number, because 724219313 - 2⁴ = 724219297 is a prime.

It is a super-2 number, since 2×724219313² = 1048987226644383938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 724219313.

It is not a weakly prime, because it can be changed into another prime (724219319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362109656 + 362109657.

It is an arithmetic number, because the mean of its divisors is an integer number (362109657).

Almost surely, 2^724219313 is an apocalyptic number.

It is an amenable number.

724219313 is a deficient number, since it is larger than the sum of its proper divisors (1).

724219313 is an equidigital number, since it uses as much as digits as its factorization.

724219313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 724219313 is about 26911.3231372967. The cubic root of 724219313 is about 898.0283227923.

The spelling of 724219313 in words is "seven hundred twenty-four million, two hundred nineteen thousand, three hundred thirteen".