1140313231 has 4 divisors (see below), whose sum is σ = 1150970472. Its totient is φ = 1129655992.

The previous prime is 1140313157. The next prime is 1140313243. The reversal of 1140313231 is 1323130411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323130411 = 337 ⋅3926203.

It is a cyclic number.

It is not a de Polignac number, because 1140313231 - 2²⁵ = 1106758799 is a prime.

It is a super-2 number, since 2×1140313231² = 2600628529587318722, 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 = 1140313199 and 1140313208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140313271) 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, 5328460 + ... + 5328673.

It is an arithmetic number, because the mean of its divisors is an integer number (287742618).

Almost surely, 2^1140313231 is an apocalyptic number.

1140313231 is a deficient number, since it is larger than the sum of its proper divisors (10657241).

1140313231 is a wasteful number, since it uses less digits than its factorization.

1140313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10657240.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1140313231 is about 33768.5242644685. The cubic root of 1140313231 is about 1044.7395949210.

Adding to 1140313231 its reverse (1323130411), we get a palindrome (2463443642).

The spelling of 1140313231 in words is "one billion, one hundred forty million, three hundred thirteen thousand, two hundred thirty-one".