1140432431 has 4 divisors (see below), whose sum is σ = 1142896032. Its totient is φ = 1137968832.

The previous prime is 1140432407. The next prime is 1140432451. The reversal of 1140432431 is 1342340411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140432431 - 2¹⁰ = 1140431407 is a prime.

It is a super-2 number, since 2×1140432431² = 2601172259353139522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140432397 and 1140432406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140432401) 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 3 ways as a sum of consecutive naturals, for example, 1231106 + ... + 1232031.

It is an arithmetic number, because the mean of its divisors is an integer number (285724008).

Almost surely, 2^1140432431 is an apocalyptic number.

1140432431 is a deficient number, since it is larger than the sum of its proper divisors (2463601).

1140432431 is an equidigital number, since it uses as much as digits as its factorization.

1140432431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463600.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1140432431 is about 33770.2891755460. The cubic root of 1140432431 is about 1044.7759967965.

Adding to 1140432431 its reverse (1342340411), we get a palindrome (2482772842).

The spelling of 1140432431 in words is "one billion, one hundred forty million, four hundred thirty-two thousand, four hundred thirty-one".