113531423940 has 288 divisors, whose sum is σ = 384037355520. Its totient is φ = 26917228800.

The previous prime is 113531423933. The next prime is 113531423983. The reversal of 113531423940 is 49324135311.

113531423940 is a `hidden beast` number, since 1 + 13 + 531 + 4 + 23 + 94 + 0 = 666.

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 = 113531423895 and 113531423904.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17850481 + ... + 17856839.

It is an arithmetic number, because the mean of its divisors is an integer number (1333463040).

Almost surely, 2^113531423940 is an apocalyptic number.

113531423940 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 113531423940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192018677760).

113531423940 is an abundant number, since it is smaller than the sum of its proper divisors (270505931580).

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

113531423940 is a wasteful number, since it uses less digits than its factorization.

113531423940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583 (or 6578 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 113531423940 in words is "one hundred thirteen billion, five hundred thirty-one million, four hundred twenty-three thousand, nine hundred forty".