1144535231 has 8 divisors (see below), whose sum is σ = 1311150624. Its totient is φ = 978697440.

The previous prime is 1144535191. The next prime is 1144535261. The reversal of 1144535231 is 1325354411.

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

It is not a de Polignac number, because 1144535231 - 2²⁶ = 1077426367 is a prime.

It is a super-2 number, since 2×1144535231² = 2619921790000446722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1144535194 and 1144535203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144535261) 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, 191240 + ... + 197133.

It is an arithmetic number, because the mean of its divisors is an integer number (163893828).

Almost surely, 2^1144535231 is an apocalyptic number.

1144535231 is a deficient number, since it is larger than the sum of its proper divisors (166615393).

1144535231 is an equidigital number, since it uses as much as digits as its factorization.

1144535231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388801.

The product of its digits is 7200, while the sum is 29.

The square root of 1144535231 is about 33830.9803434663. The cubic root of 1144535231 is about 1046.0273866898.

Adding to 1144535231 its reverse (1325354411), we get a palindrome (2469889642).

The spelling of 1144535231 in words is "one billion, one hundred forty-four million, five hundred thirty-five thousand, two hundred thirty-one".