1140631 has 4 divisors (see below), whose sum is σ = 1145232. Its totient is φ = 1136032.

The previous prime is 1140619. The next prime is 1140637. The reversal of 1140631 is 1360411.

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 1140631 - 2¹⁷ = 1009559 is a prime.

It is a super-2 number, since 2×1140631² = 2602078156322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906 + ... + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (286308).

2^1140631 is an apocalyptic number.

1140631 is a deficient number, since it is larger than the sum of its proper divisors (4601).

1140631 is an equidigital number, since it uses as much as digits as its factorization.

1140631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1140631 is about 1068.0032771485. The cubic root of 1140631 is about 104.4836631131.

It can be divided in two parts, 1140 and 631, that added together give a palindrome (1771).

The spelling of 1140631 in words is "one million, one hundred forty thousand, six hundred thirty-one".