131450340 has 72 divisors (see below), whose sum is σ = 428162112. Its totient is φ = 30045120.

The previous prime is 131450321. The next prime is 131450357. The reversal of 131450340 is 43054131.

It is a super-2 number, since 2×131450340² = 34558383772231200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19416 + ... + 25295.

It is an arithmetic number, because the mean of its divisors is an integer number (5946696).

Almost surely, 2^131450340 is an apocalyptic number.

131450340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131450340 is an abundant number, since it is smaller than the sum of its proper divisors (296711772).

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

131450340 is a wasteful number, since it uses less digits than its factorization.

131450340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44737 (or 44728 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131450340 is about 11465.1794578192. The cubic root of 131450340 is about 508.4566181910.

The spelling of 131450340 in words is "one hundred thirty-one million, four hundred fifty thousand, three hundred forty".