1113023100 has 144 divisors (see below), whose sum is σ = 3727539200. Its totient is φ = 251147520.

The previous prime is 1113023077. The next prime is 1113023123. The reversal of 1113023100 is 13203111.

It is an interprime number because it is at equal distance from previous prime (1113023077) and next prime (1113023123).

It is a super-2 number, since 2×1113023100² = 2477640842267220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162546 + ... + 169254.

Almost surely, 2^1113023100 is an apocalyptic number.

1113023100 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 1113023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863769600).

1113023100 is an abundant number, since it is smaller than the sum of its proper divisors (2614516100).

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

1113023100 is a wasteful number, since it uses less digits than its factorization.

1113023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812 (or 6805 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1113023100 is about 33362.0008392782. Note that the first 3 decimals coincide. The cubic root of 1113023100 is about 1036.3379276059.

Adding to 1113023100 its reverse (13203111), we get a palindrome (1126226211).

The spelling of 1113023100 in words is "one billion, one hundred thirteen million, twenty-three thousand, one hundred".