131313212 has 6 divisors (see below), whose sum is σ = 229798128. Its totient is φ = 65656604.

The previous prime is 131313197. The next prime is 131313229. The reversal of 131313212 is 212313131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16414148 + ... + 16414155.

It is an arithmetic number, because the mean of its divisors is an integer number (38299688).

Almost surely, 2^131313212 is an apocalyptic number.

It is an amenable number.

131313212 is a deficient number, since it is larger than the sum of its proper divisors (98484916).

131313212 is a wasteful number, since it uses less digits than its factorization.

131313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32828307 (or 32828305 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 131313212 is about 11459.1977031553. The cubic root of 131313212 is about 508.2797506422.

Adding to 131313212 its reverse (212313131), we get a palindrome (343626343).

The spelling of 131313212 in words is "one hundred thirty-one million, three hundred thirteen thousand, two hundred twelve".