130313531 has 4 divisors (see below), whose sum is σ = 130336464. Its totient is φ = 130290600.

The previous prime is 130313497. The next prime is 130313537. The reversal of 130313531 is 135313031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 130313531 - 2¹⁸ = 130051387 is a prime.

It is a super-2 number, since 2×130313531² = 33963232723375922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130313537) 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, 4121 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (32584116).

Almost surely, 2^130313531 is an apocalyptic number.

130313531 is a deficient number, since it is larger than the sum of its proper divisors (22933).

130313531 is a wasteful number, since it uses less digits than its factorization.

130313531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22932.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 130313531 is about 11415.4952148385. The cubic root of 130313531 is about 506.9866273590.

Adding to 130313531 its reverse (135313031), we get a palindrome (265626562).

The spelling of 130313531 in words is "one hundred thirty million, three hundred thirteen thousand, five hundred thirty-one".