113213731500 has 144 divisors (see below), whose sum is σ = 357455280000. Its totient is φ = 30164659200.

The previous prime is 113213731489. The next prime is 113213731507. The reversal of 113213731500 is 5137312311.

It is a happy number.

113213731500 is a `hidden beast` number, since 113 + 2 + 13 + 7 + 31 + 500 = 666.

It is not an unprimeable number, because it can be changed into a prime (113213731507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5610429 + ... + 5630571.

Almost surely, 2^113213731500 is an apocalyptic number.

113213731500 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 113213731500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178727640000).

113213731500 is an abundant number, since it is smaller than the sum of its proper divisors (244241548500).

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

113213731500 is a wasteful number, since it uses less digits than its factorization.

113213731500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21417 (or 21402 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The spelling of 113213731500 in words is "one hundred thirteen billion, two hundred thirteen million, seven hundred thirty-one thousand, five hundred".