131399412 has 24 divisors (see below), whose sum is σ = 306904416. Its totient is φ = 43756128.

The previous prime is 131399399. The next prime is 131399413. The reversal of 131399412 is 214993131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131399413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8503 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (12787684).

Almost surely, 2^131399412 is an apocalyptic number.

131399412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131399412 is an abundant number, since it is smaller than the sum of its proper divisors (175505004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131399412 is a wasteful number, since it uses less digits than its factorization.

131399412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927 (or 10925 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 131399412 is about 11462.9582569248. The cubic root of 131399412 is about 508.3909456754.

The spelling of 131399412 in words is "one hundred thirty-one million, three hundred ninety-nine thousand, four hundred twelve".