1604056231 has 2 divisors, whose sum is σ = 1604056232. Its totient is φ = 1604056230.

The previous prime is 1604056213. The next prime is 1604056261. The reversal of 1604056231 is 1326504061.

Together with previous prime (1604056213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1604056231 - 2¹¹ = 1604054183 is a prime.

It is a super-2 number, since 2×1604056231² = 5145992784419850722, 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 1604056231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604056261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802028115 + 802028116.

It is an arithmetic number, because the mean of its divisors is an integer number (802028116).

Almost surely, 2^1604056231 is an apocalyptic number.

1604056231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604056231 is an equidigital number, since it uses as much as digits as its factorization.

1604056231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1604056231 is about 40050.6707933837. The cubic root of 1604056231 is about 1170.5946355185.

The spelling of 1604056231 in words is "one billion, six hundred four million, fifty-six thousand, two hundred thirty-one".