1231113200 has 30 divisors (see below), whose sum is σ = 2957750424. Its totient is φ = 492445120.

The previous prime is 1231113119. The next prime is 1231113209. The reversal of 1231113200 is 23111321.

It is a super-2 number, since 2×1231113200² = 3031279422428480000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231113209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1538492 + ... + 1539291.

Almost surely, 2^1231113200 is an apocalyptic number.

1231113200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231113200 is an abundant number, since it is smaller than the sum of its proper divisors (1726637224).

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

1231113200 is a wasteful number, since it uses less digits than its factorization.

1231113200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077801 (or 3077790 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1231113200 is about 35087.2227456093. Note that the first 3 decimals coincide. The cubic root of 1231113200 is about 1071.7644048614.

Adding to 1231113200 its reverse (23111321), we get a palindrome (1254224521).

The spelling of 1231113200 in words is "one billion, two hundred thirty-one million, one hundred thirteen thousand, two hundred".