131400012 has 24 divisors (see below), whose sum is σ = 319931136. Its totient is φ = 41895568.

The previous prime is 131400001. The next prime is 131400019. The reversal of 131400012 is 210004131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (131400019) 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, 237768 + ... + 238319.

It is an arithmetic number, because the mean of its divisors is an integer number (13330464).

Almost surely, 2^131400012 is an apocalyptic number.

131400012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131400012 is an abundant number, since it is smaller than the sum of its proper divisors (188531124).

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

131400012 is a wasteful number, since it uses less digits than its factorization.

131400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476117 (or 476115 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131400012 is about 11462.9844281496. The cubic root of 131400012 is about 508.3917194843.

Adding to 131400012 its reverse (210004131), we get a palindrome (341404143).

The spelling of 131400012 in words is "one hundred thirty-one million, four hundred thousand, twelve".