131444920 has 32 divisors (see below), whose sum is σ = 300769200. Its totient is φ = 51685888.

The previous prime is 131444903. The next prime is 131444923. The reversal of 131444920 is 29444131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131444923) 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, 25489 + ... + 30208.

Almost surely, 2^131444920 is an apocalyptic number.

131444920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131444920 is an abundant number, since it is smaller than the sum of its proper divisors (169324280).

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

131444920 is a wasteful number, since it uses less digits than its factorization.

131444920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55767 (or 55763 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 131444920 is about 11464.9430875168. The cubic root of 131444920 is about 508.4496298162.

The spelling of 131444920 in words is "one hundred thirty-one million, four hundred forty-four thousand, nine hundred twenty".