131132139840 has 448 divisors, whose sum is σ = 499115608320. Its totient is φ = 32218767360.

The previous prime is 131132139833. The next prime is 131132139847. The reversal of 131132139840 is 48931231131.

131132139840 is a `hidden beast` number, since 1 + 311 + 3 + 213 + 98 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (131132139833) and next prime (131132139847).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 131132139795 and 131132139804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131132139847) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111982455 + ... + 111983625.

It is an arithmetic number, because the mean of its divisors is an integer number (1114097340).

Almost surely, 2^131132139840 is an apocalyptic number.

131132139840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131132139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249557804160).

131132139840 is an abundant number, since it is smaller than the sum of its proper divisors (367983468480).

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

131132139840 is a wasteful number, since it uses less digits than its factorization.

131132139840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 131132139840 in words is "one hundred thirty-one billion, one hundred thirty-two million, one hundred thirty-nine thousand, eight hundred forty".