131024013 has 4 divisors (see below), whose sum is σ = 174698688. Its totient is φ = 87349340.

The previous prime is 131024009. The next prime is 131024021. The reversal of 131024013 is 310420131.

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 not a de Polignac number, because 131024013 - 2² = 131024009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131023983 and 131024001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131024063) 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, 21837333 + ... + 21837338.

It is an arithmetic number, because the mean of its divisors is an integer number (43674672).

Almost surely, 2^131024013 is an apocalyptic number.

It is an amenable number.

131024013 is a deficient number, since it is larger than the sum of its proper divisors (43674675).

131024013 is an equidigital number, since it uses as much as digits as its factorization.

131024013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43674674.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131024013 is about 11446.5721069672. The cubic root of 131024013 is about 507.9063380033.

Adding to 131024013 its reverse (310420131), we get a palindrome (441444144).

The spelling of 131024013 in words is "one hundred thirty-one million, twenty-four thousand, thirteen".