1113320431 has 2 divisors, whose sum is σ = 1113320432. Its totient is φ = 1113320430.

The previous prime is 1113320423. The next prime is 1113320449. The reversal of 1113320431 is 1340233111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113320431 - 2³ = 1113320423 is a prime.

It is a super-2 number, since 2×1113320431² = 2478964764164051522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1113320399 and 1113320408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113320471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556660215 + 556660216.

It is an arithmetic number, because the mean of its divisors is an integer number (556660216).

Almost surely, 2^1113320431 is an apocalyptic number.

1113320431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113320431 is an equidigital number, since it uses as much as digits as its factorization.

1113320431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1113320431 is about 33366.4566743309. The cubic root of 1113320431 is about 1036.4302012099.

Adding to 1113320431 its reverse (1340233111), we get a palindrome (2453553542).

The spelling of 1113320431 in words is "one billion, one hundred thirteen million, three hundred twenty thousand, four hundred thirty-one".