1113123312 has 60 divisors (see below), whose sum is σ = 3560230960. Its totient is φ = 318034944.

The previous prime is 1113123311. The next prime is 1113123313. The reversal of 1113123312 is 2133213111.

It is an interprime number because it is at equal distance from previous prime (1113123311) and next prime (1113123313).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113123311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551137 + ... + 553152.

Almost surely, 2^1113123312 is an apocalyptic number.

1113123312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113123312 is an abundant number, since it is smaller than the sum of its proper divisors (2447107648).

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

1113123312 is a wasteful number, since it uses less digits than its factorization.

1113123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104310 (or 1104301 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1113123312 is about 33363.5026938120. The cubic root of 1113123312 is about 1036.3690292005.

Adding to 1113123312 its reverse (2133213111), we get a palindrome (3246336423).

It can be divided in two parts, 11131 and 23312, that added together give a palindrome (34443).

The spelling of 1113123312 in words is "one billion, one hundred thirteen million, one hundred twenty-three thousand, three hundred twelve".