1304431113 has 16 divisors (see below), whose sum is σ = 1839140352. Its totient is φ = 821040000.

The previous prime is 1304431109. The next prime is 1304431127. The reversal of 1304431113 is 3111344031.

It is not a de Polignac number, because 1304431113 - 2² = 1304431109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1304431113.

It is not an unprimeable number, because it can be changed into a prime (1304431103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167238 + ... + 174863.

It is an arithmetic number, because the mean of its divisors is an integer number (114946272).

Almost surely, 2^1304431113 is an apocalyptic number.

It is an amenable number.

1304431113 is a deficient number, since it is larger than the sum of its proper divisors (534709239).

1304431113 is a wasteful number, since it uses less digits than its factorization.

1304431113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342176.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1304431113 is about 36116.9089624237. The cubic root of 1304431113 is about 1092.6314986756.

Adding to 1304431113 its reverse (3111344031), we get a palindrome (4415775144).

The spelling of 1304431113 in words is "one billion, three hundred four million, four hundred thirty-one thousand, one hundred thirteen".