1156331112 has 32 divisors (see below), whose sum is σ = 2892062880. Its totient is φ = 385279040.

The previous prime is 1156331069. The next prime is 1156331161. The reversal of 1156331112 is 2111336511.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55687 + ... + 73577.

It is an arithmetic number, because the mean of its divisors is an integer number (90376965).

Almost surely, 2^1156331112 is an apocalyptic number.

1156331112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1156331112 is an abundant number, since it is smaller than the sum of its proper divisors (1735731768).

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

1156331112 is a wasteful number, since it uses less digits than its factorization.

1156331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20593 (or 20589 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 1156331112 is about 34004.8689454907. The cubic root of 1156331112 is about 1049.6086559749.

Adding to 1156331112 its reverse (2111336511), we get a palindrome (3267667623).

The spelling of 1156331112 in words is "one billion, one hundred fifty-six million, three hundred thirty-one thousand, one hundred twelve".