115731021120 has 672 divisors, whose sum is σ = 438456848256. Its totient is φ = 25690030080.

The previous prime is 115731021101. The next prime is 115731021151. The reversal of 115731021120 is 21120137511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 261243619 + ... + 261244061.

It is an arithmetic number, because the mean of its divisors is an integer number (652465548).

Almost surely, 2^115731021120 is an apocalyptic number.

115731021120 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 115731021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219228424128).

115731021120 is an abundant number, since it is smaller than the sum of its proper divisors (322725827136).

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

115731021120 is a wasteful number, since it uses less digits than its factorization.

115731021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 24.

Adding to 115731021120 its reverse (21120137511), we get a palindrome (136851158631).

The spelling of 115731021120 in words is "one hundred fifteen billion, seven hundred thirty-one million, twenty-one thousand, one hundred twenty".