1304392231 has 4 divisors (see below), whose sum is σ = 1305274464. Its totient is φ = 1303510000.

The previous prime is 1304392217. The next prime is 1304392259. The reversal of 1304392231 is 1322934031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1304392231 - 2¹⁷ = 1304261159 is a prime.

It is a super-2 number, since 2×1304392231² = 3402878184586314722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304392231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304392211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438895 + ... + 441856.

It is an arithmetic number, because the mean of its divisors is an integer number (326318616).

Almost surely, 2^1304392231 is an apocalyptic number.

1304392231 is a deficient number, since it is larger than the sum of its proper divisors (882233).

1304392231 is an equidigital number, since it uses as much as digits as its factorization.

1304392231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882232.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1304392231 is about 36116.3706786825. The cubic root of 1304392231 is about 1092.6206423159.

The spelling of 1304392231 in words is "one billion, three hundred four million, three hundred ninety-two thousand, two hundred thirty-one".