1113404431 has 2 divisors, whose sum is σ = 1113404432. Its totient is φ = 1113404430.

The previous prime is 1113404429. The next prime is 1113404449. The reversal of 1113404431 is 1344043111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113404431 - 2¹ = 1113404429 is a prime.

It is a super-2 number, since 2×1113404431² = 2479338853940867522, which contains 22 as substring.

Together with 1113404429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113407431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556702215 + 556702216.

It is an arithmetic number, because the mean of its divisors is an integer number (556702216).

Almost surely, 2^1113404431 is an apocalyptic number.

1113404431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113404431 is an equidigital number, since it uses as much as digits as its factorization.

1113404431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1113404431 is about 33367.7153997693. The cubic root of 1113404431 is about 1036.4562667657.

Adding to 1113404431 its reverse (1344043111), we get a palindrome (2457447542).

The spelling of 1113404431 in words is "one billion, one hundred thirteen million, four hundred four thousand, four hundred thirty-one".