613986431 has 2 divisors, whose sum is σ = 613986432. Its totient is φ = 613986430.

The previous prime is 613986421. The next prime is 613986493. The reversal of 613986431 is 134689316.

613986431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613986431 - 2⁶ = 613986367 is a prime.

It is a super-2 number, since 2×613986431² = 753958674904235522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613986421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306993215 + 306993216.

It is an arithmetic number, because the mean of its divisors is an integer number (306993216).

Almost surely, 2^613986431 is an apocalyptic number.

613986431 is a deficient number, since it is larger than the sum of its proper divisors (1).

613986431 is an equidigital number, since it uses as much as digits as its factorization.

613986431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 613986431 is about 24778.7495850779. The cubic root of 613986431 is about 849.9360648566.

The spelling of 613986431 in words is "six hundred thirteen million, nine hundred eighty-six thousand, four hundred thirty-one".