1111111024431 has 16 divisors (see below), whose sum is σ = 1492422637568. Its totient is φ = 735279573600.

The previous prime is 1111111024427. The next prime is 1111111024451. The reversal of 1111111024431 is 1344201111111.

It is not a de Polignac number, because 1111111024431 - 2² = 1111111024427 is a prime.

It is a super-2 number, since 2×1111111024431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111111024398 and 1111111024407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111111024421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723475 + ... + 1656996.

It is an arithmetic number, because the mean of its divisors is an integer number (93276414848).

Almost surely, 2^{1111111024431} is an apocalyptic number.

1111111024431 is a deficient number, since it is larger than the sum of its proper divisors (381311613137).

1111111024431 is a wasteful number, since it uses less digits than its factorization.

1111111024431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381622.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 1111111024431 its reverse (1344201111111), we get a palindrome (2455312135542).

The spelling of 1111111024431 in words is "one trillion, one hundred eleven billion, one hundred eleven million, twenty-four thousand, four hundred thirty-one".