131230013 has 4 divisors (see below), whose sum is σ = 131286300. Its totient is φ = 131173728.

The previous prime is 131230003. The next prime is 131230049. The reversal of 131230013 is 310032131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128550244 + 2679769 = 11338^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 131230013 - 2⁴ = 131229997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131230013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230003) 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, 24488 + ... + 29361.

It is an arithmetic number, because the mean of its divisors is an integer number (32821575).

Almost surely, 2^131230013 is an apocalyptic number.

It is an amenable number.

131230013 is a deficient number, since it is larger than the sum of its proper divisors (56287).

131230013 is an equidigital number, since it uses as much as digits as its factorization.

131230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56286.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 131230013 is about 11455.5668999836. The cubic root of 131230013 is about 508.1723806357.

Adding to 131230013 its reverse (310032131), we get a palindrome (441262144).

The spelling of 131230013 in words is "one hundred thirty-one million, two hundred thirty thousand, thirteen".