131021313 has 8 divisors (see below), whose sum is σ = 174750048. Its totient is φ = 87320064.

The previous prime is 131021311. The next prime is 131021323. The reversal of 131021313 is 313120131.

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

It is not a de Polignac number, because 131021313 - 2¹ = 131021311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131021292 and 131021301.

It is not an unprimeable number, because it can be changed into a prime (131021311) 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, 10606 + ... + 19352.

It is an arithmetic number, because the mean of its divisors is an integer number (21843756).

Almost surely, 2^131021313 is an apocalyptic number.

It is an amenable number.

131021313 is a deficient number, since it is larger than the sum of its proper divisors (43728735).

131021313 is an equidigital number, since it uses as much as digits as its factorization.

131021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13743.

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

The square root of 131021313 is about 11446.4541671209. The cubic root of 131021313 is about 507.9028491860.

Adding to 131021313 its reverse (313120131), we get a palindrome (444141444).

The spelling of 131021313 in words is "one hundred thirty-one million, twenty-one thousand, three hundred thirteen".