1115231390 has 32 divisors (see below), whose sum is σ = 2470668480. Its totient is φ = 352952064.

The previous prime is 1115231371. The next prime is 1115231419. The reversal of 1115231390 is 931325111.

1115231390 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 611855 + ... + 613674.

It is an arithmetic number, because the mean of its divisors is an integer number (77208390).

Almost surely, 2^1115231390 is an apocalyptic number.

1115231390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115231390 is an abundant number, since it is smaller than the sum of its proper divisors (1355437090).

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

1115231390 is a wasteful number, since it uses less digits than its factorization.

1115231390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225556.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1115231390 is about 33395.0803262996. The cubic root of 1115231390 is about 1037.0228558367.

The spelling of 1115231390 in words is "one billion, one hundred fifteen million, two hundred thirty-one thousand, three hundred ninety".