1140431111 has 8 divisors (see below), whose sum is σ = 1216735344. Its totient is φ = 1065151360.

The previous prime is 1140431107. The next prime is 1140431153. The reversal of 1140431111 is 1111340411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1140431111 - 2² = 1140431107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140431111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140431101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253820 + ... + 258273.

It is an arithmetic number, because the mean of its divisors is an integer number (152091918).

Almost surely, 2^1140431111 is an apocalyptic number.

1140431111 is a deficient number, since it is larger than the sum of its proper divisors (76304233).

1140431111 is a wasteful number, since it uses less digits than its factorization.

1140431111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512241.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1140431111 is about 33770.2696317338. The cubic root of 1140431111 is about 1044.7755937023.

Adding to 1140431111 its reverse (1111340411), we get a palindrome (2251771522).

The spelling of 1140431111 in words is "one billion, one hundred forty million, four hundred thirty-one thousand, one hundred eleven".