130531513 has 4 divisors (see below), whose sum is σ = 149178880. Its totient is φ = 111884148.

The previous prime is 130531487. The next prime is 130531517. The reversal of 130531513 is 315135031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 315135031 = 37 ⋅8517163.

It is a cyclic number.

It is not a de Polignac number, because 130531513 - 2¹⁷ = 130400441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130531517) 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, 9323673 + ... + 9323686.

It is an arithmetic number, because the mean of its divisors is an integer number (37294720).

Almost surely, 2^130531513 is an apocalyptic number.

It is an amenable number.

130531513 is a deficient number, since it is larger than the sum of its proper divisors (18647367).

130531513 is an equidigital number, since it uses as much as digits as its factorization.

130531513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18647366.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 130531513 is about 11425.0388620783. The cubic root of 130531513 is about 507.2691572304.

Adding to 130531513 its reverse (315135031), we get a palindrome (445666544).

It can be divided in two parts, 130531 and 513, that added together give a square (131044 = 362²).

The spelling of 130531513 in words is "one hundred thirty million, five hundred thirty-one thousand, five hundred thirteen".