131121233441040 has 160 divisors (see below), whose sum is σ = 413322771649536. Its totient is φ = 34380670625280.

The previous prime is 131121233440859. The next prime is 131121233441041. The reversal of 131121233441040 is 40144332121131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131121233440989 and 131121233441007.

It is not an unprimeable number, because it can be changed into a prime (131121233441041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11394964 + ... + 19801203.

Almost surely, 2^{131121233441040} is an apocalyptic number.

131121233441040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131121233441040 is an abundant number, since it is smaller than the sum of its proper divisors (282201538208496).

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

131121233441040 is a wasteful number, since it uses less digits than its factorization.

131121233441040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31196477 (or 31196471 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 131121233441040 its reverse (40144332121131), we get a palindrome (171265565562171).

The spelling of 131121233441040 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, two hundred thirty-three million, four hundred forty-one thousand, forty".