1440231101 has 2 divisors, whose sum is σ = 1440231102. Its totient is φ = 1440231100.

The previous prime is 1440231083. The next prime is 1440231127. The reversal of 1440231101 is 1011320441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760325476 + 679905625 = 27574^2 + 26075^2 .

It is an emirp because it is prime and its reverse (1011320441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440231101 - 2²⁶ = 1373122237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440231101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440231301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720115550 + 720115551.

It is an arithmetic number, because the mean of its divisors is an integer number (720115551).

Almost surely, 2^1440231101 is an apocalyptic number.

It is an amenable number.

1440231101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440231101 is an equidigital number, since it uses as much as digits as its factorization.

1440231101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1440231101 is about 37950.3768228986. The cubic root of 1440231101 is about 1129.3036409724.

Adding to 1440231101 its reverse (1011320441), we get a palindrome (2451551542).

The spelling of 1440231101 in words is "one billion, four hundred forty million, two hundred thirty-one thousand, one hundred one".