336431521 has 2 divisors, whose sum is σ = 336431522. Its totient is φ = 336431520.

The previous prime is 336431503. The next prime is 336431587. The reversal of 336431521 is 125134633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269780625 + 66650896 = 16425^2 + 8164^2 .

It is a cyclic number.

It is not a de Polignac number, because 336431521 - 2⁵ = 336431489 is a prime.

It is a super-2 number, since 2×336431521² = 226372336644746882, 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 336431521.

It is not a weakly prime, because it can be changed into another prime (336431591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168215760 + 168215761.

It is an arithmetic number, because the mean of its divisors is an integer number (168215761).

Almost surely, 2^336431521 is an apocalyptic number.

It is an amenable number.

336431521 is a deficient number, since it is larger than the sum of its proper divisors (1).

336431521 is an equidigital number, since it uses as much as digits as its factorization.

336431521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 336431521 is about 18342.0697032805. The cubic root of 336431521 is about 695.5028164409.

The spelling of 336431521 in words is "three hundred thirty-six million, four hundred thirty-one thousand, five hundred twenty-one".