1111404104431 has 2 divisors, whose sum is σ = 1111404104432. Its totient is φ = 1111404104430.

The previous prime is 1111404104423. The next prime is 1111404104443. The reversal of 1111404104431 is 1344014041111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111404104431 - 2³ = 1111404104423 is a prime.

It is a super-2 number, since 2×1111404104431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111404104396 and 1111404104405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111404104411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555702052215 + 555702052216.

It is an arithmetic number, because the mean of its divisors is an integer number (555702052216).

Almost surely, 2^{1111404104431} is an apocalyptic number.

1111404104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111404104431 is an equidigital number, since it uses as much as digits as its factorization.

1111404104431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 1111404104431 its reverse (1344014041111), we get a palindrome (2455418145542).

The spelling of 1111404104431 in words is "one trillion, one hundred eleven billion, four hundred four million, one hundred four thousand, four hundred thirty-one".