131440240331 has 16 divisors (see below), whose sum is σ = 140564882016. Its totient is φ = 122476064256.

The previous prime is 131440240319. The next prime is 131440240367. The reversal of 131440240331 is 133042044131.

It is a happy number.

It is not a de Polignac number, because 131440240331 - 2²⁶ = 131373131467 is a prime.

It is a super-2 number, since 2×131440240331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131440240331.

It is not an unprimeable number, because it can be changed into a prime (131440240531) 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, 650420 + ... + 828206.

It is an arithmetic number, because the mean of its divisors is an integer number (8785305126).

Almost surely, 2^131440240331 is an apocalyptic number.

131440240331 is a deficient number, since it is larger than the sum of its proper divisors (9124641685).

131440240331 is a wasteful number, since it uses less digits than its factorization.

131440240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178238.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131440240331 its reverse (133042044131), we get a palindrome (264482284462).

The spelling of 131440240331 in words is "one hundred thirty-one billion, four hundred forty million, two hundred forty thousand, three hundred thirty-one".