1140434231 has 32 divisors (see below), whose sum is σ = 1268047872. Its totient is φ = 1022186880.

The previous prime is 1140434213. The next prime is 1140434233. The reversal of 1140434231 is 1324340411.

It is a cyclic number.

It is not a de Polignac number, because 1140434231 - 2⁶ = 1140434167 is a prime.

It is a super-2 number, since 2×1140434231² = 2601180470473122722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140434197 and 1140434206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140434233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3892121 + ... + 3892413.

It is an arithmetic number, because the mean of its divisors is an integer number (39626496).

Almost surely, 2^1140434231 is an apocalyptic number.

1140434231 is a deficient number, since it is larger than the sum of its proper divisors (127613641).

1140434231 is a wasteful number, since it uses less digits than its factorization.

1140434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

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

The square root of 1140434231 is about 33770.3158261808. The cubic root of 1140434231 is about 1044.7765464698.

Adding to 1140434231 its reverse (1324340411), we get a palindrome (2464774642).

The spelling of 1140434231 in words is "one billion, one hundred forty million, four hundred thirty-four thousand, two hundred thirty-one".