1304352131 has 8 divisors (see below), whose sum is σ = 1335751680. Its totient is φ = 1273104648.

The previous prime is 1304352121. The next prime is 1304352143. The reversal of 1304352131 is 1312534031.

1304352131 = 491² + 492² + ... + 1591².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304352131 - 2¹⁸ = 1304089987 is a prime.

It is a super-2 number, since 2×1304352131² = 3402668963288482322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304352097 and 1304352106.

It is not an unprimeable number, because it can be changed into a prime (1304352121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20561 + ... + 55058.

It is an arithmetic number, because the mean of its divisors is an integer number (166968960).

Almost surely, 2^1304352131 is an apocalyptic number.

1304352131 is a deficient number, since it is larger than the sum of its proper divisors (31399549).

1304352131 is an equidigital number, since it uses as much as digits as its factorization.

1304352131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76033.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1304352131 is about 36115.8155245039. The cubic root of 1304352131 is about 1092.6094456488.

Adding to 1304352131 its reverse (1312534031), we get a palindrome (2616886162).

The spelling of 1304352131 in words is "one billion, three hundred four million, three hundred fifty-two thousand, one hundred thirty-one".