1113400231 has 2 divisors, whose sum is σ = 1113400232. Its totient is φ = 1113400230.

The previous prime is 1113400213. The next prime is 1113400259. The reversal of 1113400231 is 1320043111.

Together with previous prime (1113400213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113400231 - 2⁵ = 1113400199 is a prime.

It is a super-2 number, since 2×1113400231² = 2479320148781706722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113400831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556700115 + 556700116.

It is an arithmetic number, because the mean of its divisors is an integer number (556700116).

Almost surely, 2^1113400231 is an apocalyptic number.

1113400231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113400231 is an equidigital number, since it uses as much as digits as its factorization.

1113400231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1113400231 is about 33367.6524646251. The cubic root of 1113400231 is about 1036.4549635190.

Adding to 1113400231 its reverse (1320043111), we get a palindrome (2433443342).

The spelling of 1113400231 in words is "one billion, one hundred thirteen million, four hundred thousand, two hundred thirty-one".