612278431 has 2 divisors, whose sum is σ = 612278432. Its totient is φ = 612278430.

The previous prime is 612278413. The next prime is 612278441. The reversal of 612278431 is 134872216.

Together with previous prime (612278413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612278431 - 2¹¹ = 612276383 is a prime.

It is a super-2 number, since 2×612278431² = 749769754135643522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612278441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306139215 + 306139216.

It is an arithmetic number, because the mean of its divisors is an integer number (306139216).

Almost surely, 2^612278431 is an apocalyptic number.

612278431 is a deficient number, since it is larger than the sum of its proper divisors (1).

612278431 is an equidigital number, since it uses as much as digits as its factorization.

612278431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 612278431 is about 24744.2605668466. The cubic root of 612278431 is about 849.1472097484.

The spelling of 612278431 in words is "six hundred twelve million, two hundred seventy-eight thousand, four hundred thirty-one".