131401240 has 32 divisors (see below), whose sum is σ = 296051760. Its totient is φ = 52489600.

The previous prime is 131401229. The next prime is 131401267. The reversal of 131401240 is 42104131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35895 + ... + 39385.

Almost surely, 2^131401240 is an apocalyptic number.

131401240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131401240 is an abundant number, since it is smaller than the sum of its proper divisors (164650520).

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

131401240 is a wasteful number, since it uses less digits than its factorization.

131401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131401240 is about 11463.0379917367. The cubic root of 131401240 is about 508.3933032059.

Adding to 131401240 its reverse (42104131), we get a palindrome (173505371).

The spelling of 131401240 in words is "one hundred thirty-one million, four hundred one thousand, two hundred forty".