1111431402 has 32 divisors (see below), whose sum is σ = 2472004800. Its totient is φ = 370153584.

The previous prime is 1111431397. The next prime is 1111431421. The reversal of 1111431402 is 2041341111.

It is a super-2 number, since 2×1111431402² = 2470559522703371208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57993 + ... + 74739.

It is an arithmetic number, because the mean of its divisors is an integer number (77250150).

Almost surely, 2^1111431402 is an apocalyptic number.

1111431402 is an abundant number, since it is smaller than the sum of its proper divisors (1360573398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111431402 is a wasteful number, since it uses less digits than its factorization.

1111431402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987 (or 17981 counting only the distinct ones).

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

The square root of 1111431402 is about 33338.1373504880. The cubic root of 1111431402 is about 1035.8436809162.

Adding to 1111431402 its reverse (2041341111), we get a palindrome (3152772513).

The spelling of 1111431402 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, four hundred two".