1111402431 has 16 divisors (see below), whose sum is σ = 1657432320. Its totient is φ = 736025400.

The previous prime is 1111402423. The next prime is 1111402447. The reversal of 1111402431 is 1342041111.

It is not a de Polignac number, because 1111402431 - 2³ = 1111402423 is a prime.

It is a super-2 number, since 2×1111402431² = 2470430727265419522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111400431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132225 + ... + 140378.

It is an arithmetic number, because the mean of its divisors is an integer number (103589520).

Almost surely, 2^1111402431 is an apocalyptic number.

1111402431 is a deficient number, since it is larger than the sum of its proper divisors (546029889).

1111402431 is a wasteful number, since it uses less digits than its factorization.

1111402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272763 (or 272757 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1111402431 is about 33337.7028452771. The cubic root of 1111402431 is about 1035.8346806042.

Adding to 1111402431 its reverse (1342041111), we get a palindrome (2453443542).

The spelling of 1111402431 in words is "one billion, one hundred eleven million, four hundred two thousand, four hundred thirty-one".