1164440231 has 2 divisors, whose sum is σ = 1164440232. Its totient is φ = 1164440230.

The previous prime is 1164440201. The next prime is 1164440237. The reversal of 1164440231 is 1320444611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1164440231 - 2¹⁰ = 1164439207 is a prime.

It is a super-2 number, since 2×1164440231² = 2711842103142666722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1164440231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164440237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582220115 + 582220116.

It is an arithmetic number, because the mean of its divisors is an integer number (582220116).

Almost surely, 2^1164440231 is an apocalyptic number.

1164440231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164440231 is an equidigital number, since it uses as much as digits as its factorization.

1164440231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1164440231 is about 34123.8953081268. The cubic root of 1164440231 is about 1052.0565080100.

Adding to 1164440231 its reverse (1320444611), we get a palindrome (2484884842).

The spelling of 1164440231 in words is "one billion, one hundred sixty-four million, four hundred forty thousand, two hundred thirty-one".