113231145540 has 192 divisors, whose sum is σ = 348096994560. Its totient is φ = 27373731840.

The previous prime is 113231145539. The next prime is 113231145553. The reversal of 113231145540 is 45541132311.

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 = 113231145498 and 113231145507.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13099620 + ... + 13108260.

It is an arithmetic number, because the mean of its divisors is an integer number (1813005180).

Almost surely, 2^113231145540 is an apocalyptic number.

113231145540 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 113231145540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174048497280).

113231145540 is an abundant number, since it is smaller than the sum of its proper divisors (234865849020).

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

113231145540 is a wasteful number, since it uses less digits than its factorization.

113231145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142 (or 9140 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 113231145540 its reverse (45541132311), we get a palindrome (158772277851).

The spelling of 113231145540 in words is "one hundred thirteen billion, two hundred thirty-one million, one hundred forty-five thousand, five hundred forty".