115310331220 has 48 divisors (see below), whose sum is σ = 293023906560. Its totient is φ = 37209383424.

The previous prime is 115310331137. The next prime is 115310331281. The reversal of 115310331220 is 22133013511.

It is a super-2 number, since 2×115310331220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115310331191 and 115310331200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24222480 + ... + 24227239.

It is an arithmetic number, because the mean of its divisors is an integer number (6104664720).

Almost surely, 2^115310331220 is an apocalyptic number.

115310331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115310331220 is an abundant number, since it is smaller than the sum of its proper divisors (177713575340).

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

115310331220 is a wasteful number, since it uses less digits than its factorization.

115310331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48449752 (or 48449750 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 115310331220 its reverse (22133013511), we get a palindrome (137443344731).

The spelling of 115310331220 in words is "one hundred fifteen billion, three hundred ten million, three hundred thirty-one thousand, two hundred twenty".