131302213 has 12 divisors (see below), whose sum is σ = 156467052. Its totient is φ = 109798080.

The previous prime is 131302211. The next prime is 131302229. The reversal of 131302213 is 312203131.

It can be written as a sum of positive squares in 2 ways, for example, as 65254084 + 66048129 = 8078^2 + 8127^2 .

It is not a de Polignac number, because 131302213 - 2¹ = 131302211 is a prime.

It is a super-2 number, since 2×131302213² = 34480542277394738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30670 + ... + 34687.

It is an arithmetic number, because the mean of its divisors is an integer number (13038921).

Almost surely, 2^131302213 is an apocalyptic number.

It is an amenable number.

131302213 is a deficient number, since it is larger than the sum of its proper divisors (25164839).

131302213 is an equidigital number, since it uses as much as digits as its factorization.

131302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65412 (or 65405 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131302213 is about 11458.7177729448. The cubic root of 131302213 is about 508.2655588104.

Adding to 131302213 its reverse (312203131), we get a palindrome (443505344).

The spelling of 131302213 in words is "one hundred thirty-one million, three hundred two thousand, two hundred thirteen".