131002131024240 has 80 divisors (see below), whose sum is σ = 464121835634688. Its totient is φ = 29943344233728.

The previous prime is 131002131024221. The next prime is 131002131024241. The reversal of 131002131024240 is 42420131200131.

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

It is a super-2 number, since 2×131002131024240² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 131002131024240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131002131024241) 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, 38988727792 + ... + 38988731151.

Almost surely, 2^{131002131024240} is an apocalyptic number.

131002131024240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131002131024240 is an abundant number, since it is smaller than the sum of its proper divisors (333119704610448).

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

131002131024240 is a wasteful number, since it uses less digits than its factorization.

131002131024240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77977458966 (or 77977458960 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131002131024240 its reverse (42420131200131), we get a palindrome (173422262224371).

The spelling of 131002131024240 in words is "one hundred thirty-one trillion, two billion, one hundred thirty-one million, twenty-four thousand, two hundred forty".