113231222040 has 128 divisors (see below), whose sum is σ = 363037800960. Its totient is φ = 28153165824.

The previous prime is 113231222021. The next prime is 113231222051. The reversal of 113231222040 is 40222132311.

It is a junction number, because it is equal to n+sod(n) for n = 113231221998 and 113231222016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41092 + ... + 477651.

It is an arithmetic number, because the mean of its divisors is an integer number (2836232820).

Almost surely, 2^113231222040 is an apocalyptic number.

113231222040 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 113231222040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181518900480).

113231222040 is an abundant number, since it is smaller than the sum of its proper divisors (249806578920).

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

113231222040 is a wasteful number, since it uses less digits than its factorization.

113231222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518881 (or 518877 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 113231222040 its reverse (40222132311), we get a palindrome (153453354351).

The spelling of 113231222040 in words is "one hundred thirteen billion, two hundred thirty-one million, two hundred twenty-two thousand, forty".