131274440 has 128 divisors (see below), whose sum is σ = 336942720. Its totient is φ = 45619200.

The previous prime is 131274433. The next prime is 131274461. The reversal of 131274440 is 44472131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1798244 + ... + 1798316.

It is an arithmetic number, because the mean of its divisors is an integer number (2632365).

Almost surely, 2^131274440 is an apocalyptic number.

131274440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131274440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168471360).

131274440 is an abundant number, since it is smaller than the sum of its proper divisors (205668280).

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

131274440 is a wasteful number, since it uses less digits than its factorization.

131274440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 131274440 is about 11457.5058367866. The cubic root of 131274440 is about 508.2297202300.

The spelling of 131274440 in words is "one hundred thirty-one million, two hundred seventy-four thousand, four hundred forty".