1111431432 has 64 divisors (see below), whose sum is σ = 2818872000. Its totient is φ = 365137920.

The previous prime is 1111431427. The next prime is 1111431473. The reversal of 1111431432 is 2341341111.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1111431399 and 1111431408.

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, 653319 + ... + 655017.

It is an arithmetic number, because the mean of its divisors is an integer number (44044875).

Almost surely, 2^1111431432 is an apocalyptic number.

1111431432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111431432 is an abundant number, since it is smaller than the sum of its proper divisors (1707440568).

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

1111431432 is a wasteful number, since it uses less digits than its factorization.

1111431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2082 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1111431432 is about 33338.1378004231. The cubic root of 1111431432 is about 1035.8436902361.

Adding to 1111431432 its reverse (2341341111), we get a palindrome (3452772543).

It can be divided in two parts, 111143 and 1432, that added together give a triangular number (112575 = T₄₇₄).

The spelling of 1111431432 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, four hundred thirty-two".