131231013 has 8 divisors (see below), whose sum is σ = 175145376. Its totient is φ = 87402000.

The previous prime is 131230999. The next prime is 131231027. The reversal of 131231013 is 310132131.

It is an interprime number because it is at equal distance from previous prime (131230999) and next prime (131231027).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131231013 - 2⁹ = 131230501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131230983 and 131231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17658 + ... + 23963.

It is an arithmetic number, because the mean of its divisors is an integer number (21893172).

Almost surely, 2^131231013 is an apocalyptic number.

It is an amenable number.

131231013 is a deficient number, since it is larger than the sum of its proper divisors (43914363).

131231013 is a wasteful number, since it uses less digits than its factorization.

131231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42675.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131231013 is about 11455.6105468019. The cubic root of 131231013 is about 508.1736714255.

Adding to 131231013 its reverse (310132131), we get a palindrome (441363144).

The spelling of 131231013 in words is "one hundred thirty-one million, two hundred thirty-one thousand, thirteen".