670355431 has 2 divisors, whose sum is σ = 670355432. Its totient is φ = 670355430.

The previous prime is 670355417. The next prime is 670355461. The reversal of 670355431 is 134553076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670355431 - 2¹⁹ = 669831143 is a prime.

It is a super-2 number, since 2×670355431² = 898752807742391522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670355461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335177715 + 335177716.

It is an arithmetic number, because the mean of its divisors is an integer number (335177716).

Almost surely, 2^670355431 is an apocalyptic number.

670355431 is a deficient number, since it is larger than the sum of its proper divisors (1).

670355431 is an equidigital number, since it uses as much as digits as its factorization.

670355431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 670355431 is about 25891.2230495201. The cubic root of 670355431 is about 875.1887183695.

The spelling of 670355431 in words is "six hundred seventy million, three hundred fifty-five thousand, four hundred thirty-one".