131404140 has 96 divisors (see below), whose sum is σ = 467228160. Its totient is φ = 30034368.

The previous prime is 131404121. The next prime is 131404183. The reversal of 131404140 is 41404131.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13602 + ... + 21161.

It is an arithmetic number, because the mean of its divisors is an integer number (4866960).

Almost surely, 2^131404140 is an apocalyptic number.

131404140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131404140 is an abundant number, since it is smaller than the sum of its proper divisors (335824020).

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

131404140 is a wasteful number, since it uses less digits than its factorization.

131404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34788 (or 34780 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131404140 is about 11463.1644845566. The cubic root of 131404140 is about 508.3970432257.

Adding to 131404140 its reverse (41404131), we get a palindrome (172808271).

Subtracting from 131404140 its reverse (41404131), we obtain a palindrome (90000009).

The spelling of 131404140 in words is "one hundred thirty-one million, four hundred four thousand, one hundred forty".