131501040 has 80 divisors (see below), whose sum is σ = 444721536. Its totient is φ = 31878400.

The previous prime is 131500987. The next prime is 131501047. The reversal of 131501040 is 40105131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131501047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22266 + ... + 27545.

Almost surely, 2^131501040 is an apocalyptic number.

131501040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131501040 is an abundant number, since it is smaller than the sum of its proper divisors (313220496).

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

131501040 is a wasteful number, since it uses less digits than its factorization.

131501040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49838 (or 49832 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 131501040 is about 11467.3902872450. The cubic root of 131501040 is about 508.5219798502.

Adding to 131501040 its reverse (40105131), we get a palindrome (171606171).

The spelling of 131501040 in words is "one hundred thirty-one million, five hundred one thousand, forty".