131404312 has 16 divisors (see below), whose sum is σ = 265335840. Its totient is φ = 60648096.

The previous prime is 131404283. The next prime is 131404321. The reversal of 131404312 is 213404131.

It is a self number, because there is not a number n which added to its sum of digits gives 131404312.

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, 631648 + ... + 631855.

It is an arithmetic number, because the mean of its divisors is an integer number (16583490).

Almost surely, 2^131404312 is an apocalyptic number.

It is an amenable number.

131404312 is an abundant number, since it is smaller than the sum of its proper divisors (133931528).

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

131404312 is a wasteful number, since it uses less digits than its factorization.

131404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263522 (or 1263518 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 131404312 is about 11463.1719868455. The cubic root of 131404312 is about 508.3972650458.

Adding to 131404312 its reverse (213404131), we get a palindrome (344808443).

The spelling of 131404312 in words is "one hundred thirty-one million, four hundred four thousand, three hundred twelve".