15723313 has 2 divisors, whose sum is σ = 15723314. Its totient is φ = 15723312.

The previous prime is 15723269. The next prime is 15723347. The reversal of 15723313 is 31332751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12723489 + 2999824 = 3567^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 15723313 - 2⁹ = 15722801 is a prime.

It is not a weakly prime, because it can be changed into another prime (15723373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861656 + 7861657.

It is an arithmetic number, because the mean of its divisors is an integer number (7861657).

Almost surely, 2^15723313 is an apocalyptic number.

It is an amenable number.

15723313 is a deficient number, since it is larger than the sum of its proper divisors (1).

15723313 is an equidigital number, since it uses as much as digits as its factorization.

15723313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 25.

The square root of 15723313 is about 3965.2632951672. The cubic root of 15723313 is about 250.5232401151.

The spelling of 15723313 in words is "fifteen million, seven hundred twenty-three thousand, three hundred thirteen".