115311040 has 112 divisors (see below), whose sum is σ = 301861728. Its totient is φ = 41693184.

The previous prime is 115310977. The next prime is 115311043. The reversal of 115311040 is 40113511.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115311043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220219 + ... + 220741.

It is an arithmetic number, because the mean of its divisors is an integer number (2695194).

Almost surely, 2^115311040 is an apocalyptic number.

115311040 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 115311040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150930864).

115311040 is an abundant number, since it is smaller than the sum of its proper divisors (186550688).

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

115311040 is a wasteful number, since it uses less digits than its factorization.

115311040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 115311040 is about 10738.2978166933. The cubic root of 115311040 is about 486.7324445608.

Adding to 115311040 its reverse (40113511), we get a palindrome (155424551).

The spelling of 115311040 in words is "one hundred fifteen million, three hundred eleven thousand, forty".