1304311957 has 4 divisors (see below), whose sum is σ = 1404643660. Its totient is φ = 1203980256.

The previous prime is 1304311937. The next prime is 1304311963. The reversal of 1304311957 is 7591134031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7591134031 = 13 ⋅583933387.

It can be written as a sum of positive squares in 2 ways, for example, as 225780676 + 1078531281 = 15026^2 + 32841^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304311957 - 2¹⁵ = 1304279189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304311907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50165832 + ... + 50165857.

It is an arithmetic number, because the mean of its divisors is an integer number (351160915).

Almost surely, 2^1304311957 is an apocalyptic number.

It is an amenable number.

1304311957 is a deficient number, since it is larger than the sum of its proper divisors (100331703).

1304311957 is a wasteful number, since it uses less digits than its factorization.

1304311957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100331702.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1304311957 is about 36115.2593372940. The cubic root of 1304311957 is about 1092.5982280894.

Adding to 1304311957 its reverse (7591134031), we get a palindrome (8895445988).

The spelling of 1304311957 in words is "one billion, three hundred four million, three hundred eleven thousand, nine hundred fifty-seven".