612810431 has 2 divisors, whose sum is σ = 612810432. Its totient is φ = 612810430.

The previous prime is 612810409. The next prime is 612810463. The reversal of 612810431 is 134018216.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612810431 is a prime.

It is a super-2 number, since 2×612810431² = 751073248684811522, 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 612810431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612810481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306405215 + 306405216.

It is an arithmetic number, because the mean of its divisors is an integer number (306405216).

Almost surely, 2^612810431 is an apocalyptic number.

612810431 is a deficient number, since it is larger than the sum of its proper divisors (1).

612810431 is an equidigital number, since it uses as much as digits as its factorization.

612810431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 612810431 is about 24755.0082003622. The cubic root of 612810431 is about 849.3930758539.

Adding to 612810431 its reverse (134018216), we get a palindrome (746828647).

The spelling of 612810431 in words is "six hundred twelve million, eight hundred ten thousand, four hundred thirty-one".