103131313 has 4 divisors (see below), whose sum is σ = 103154688. Its totient is φ = 103107940.

The previous prime is 103131307. The next prime is 103131323. The reversal of 103131313 is 313131301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103131313 is a prime.

It is a super-2 number, since 2×103131313² = 21272135442207938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103131323) 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, 2833 + ... + 14638.

It is an arithmetic number, because the mean of its divisors is an integer number (25788672).

Almost surely, 2^103131313 is an apocalyptic number.

It is an amenable number.

103131313 is a deficient number, since it is larger than the sum of its proper divisors (23375).

103131313 is an equidigital number, since it uses as much as digits as its factorization.

103131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23374.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 103131313 is about 10155.3588316711. The cubic root of 103131313 is about 468.9539327641.

Adding to 103131313 its reverse (313131301), we get a palindrome (416262614).

The spelling of 103131313 in words is "one hundred three million, one hundred thirty-one thousand, three hundred thirteen".