1231113400 has 48 divisors (see below), whose sum is σ = 3122556840. Its totient is φ = 447676800.

The previous prime is 1231113397. The next prime is 1231113413. The reversal of 1231113400 is 43111321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277599 + ... + 281998.

Almost surely, 2^1231113400 is an apocalyptic number.

1231113400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231113400 is an abundant number, since it is smaller than the sum of its proper divisors (1891443440).

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

1231113400 is a wasteful number, since it uses less digits than its factorization.

1231113400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559624 (or 559615 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231113400 is about 35087.2255956495. The cubic root of 1231113400 is about 1071.7644628991.

Adding to 1231113400 its reverse (43111321), we get a palindrome (1274224721).

The spelling of 1231113400 in words is "one billion, two hundred thirty-one million, one hundred thirteen thousand, four hundred".