1113423131 has 2 divisors, whose sum is σ = 1113423132. Its totient is φ = 1113423130.

The previous prime is 1113423127. The next prime is 1113423137. The reversal of 1113423131 is 1313243111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113423131 - 2² = 1113423127 is a prime.

It is a super-2 number, since 2×1113423131² = 2479422137291686322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1113423137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556711565 + 556711566.

It is an arithmetic number, because the mean of its divisors is an integer number (556711566).

Almost surely, 2^1113423131 is an apocalyptic number.

1113423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113423131 is an equidigital number, since it uses as much as digits as its factorization.

1113423131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1113423131 is about 33367.9956095658. The cubic root of 1113423131 is about 1036.4620692765.

Adding to 1113423131 its reverse (1313243111), we get a palindrome (2426666242).

The spelling of 1113423131 in words is "one billion, one hundred thirteen million, four hundred twenty-three thousand, one hundred thirty-one".