131744440 has 32 divisors (see below), whose sum is σ = 299058480. Its totient is φ = 52229632.

The previous prime is 131744413. The next prime is 131744443. The reversal of 131744440 is 44447131.

It is a junction number, because it is equal to n+sod(n) for n = 131744399 and 131744408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131744443) 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, 10054 + ... + 19093.

Almost surely, 2^131744440 is an apocalyptic number.

131744440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131744440 is an abundant number, since it is smaller than the sum of its proper divisors (167314040).

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

131744440 is a wasteful number, since it uses less digits than its factorization.

131744440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29271 (or 29267 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 131744440 is about 11477.9980832896. The cubic root of 131744440 is about 508.8355336753.

The spelling of 131744440 in words is "one hundred thirty-one million, seven hundred forty-four thousand, four hundred forty".