131131412 has 12 divisors (see below), whose sum is σ = 229623156. Its totient is φ = 65524800.

The previous prime is 131131409. The next prime is 131131439. The reversal of 131131412 is 214131131.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 119814916 = 3364^2 + 10946^2 .

It is a super-2 number, since 2×131131412² = 34390894426227488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339 + ... + 16362.

It is an arithmetic number, because the mean of its divisors is an integer number (19135263).

Almost surely, 2^131131412 is an apocalyptic number.

It is an amenable number.

131131412 is a deficient number, since it is larger than the sum of its proper divisors (98491744).

131131412 is a wasteful number, since it uses less digits than its factorization.

131131412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20458 (or 20456 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 131131412 is about 11451.2624631523. The cubic root of 131131412 is about 508.0450752571.

Adding to 131131412 its reverse (214131131), we get a palindrome (345262543).

It can be divided in two parts, 1311 and 31412, that added together give a palindrome (32723).

The spelling of 131131412 in words is "one hundred thirty-one million, one hundred thirty-one thousand, four hundred twelve".