1313210131 has 4 divisors (see below), whose sum is σ = 1313603064. Its totient is φ = 1312817200.

The previous prime is 1313210111. The next prime is 1313210167. The reversal of 1313210131 is 1310123131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1310123131 = 19 ⋅68953849.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313210131 is a prime.

It is a super-2 number, since 2×1313210131² = 3449041696322074322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313210111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191410 + ... + 198151.

It is an arithmetic number, because the mean of its divisors is an integer number (328400766).

Almost surely, 2^1313210131 is an apocalyptic number.

1313210131 is a deficient number, since it is larger than the sum of its proper divisors (392933).

1313210131 is an equidigital number, since it uses as much as digits as its factorization.

1313210131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392932.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1313210131 is about 36238.2412790687. The cubic root of 1313210131 is about 1095.0772117388.

Adding to 1313210131 its reverse (1310123131), we get a palindrome (2623333262).

The spelling of 1313210131 in words is "one billion, three hundred thirteen million, two hundred ten thousand, one hundred thirty-one".