1144022431 has 4 divisors (see below), whose sum is σ = 1144449000. Its totient is φ = 1143595864.

The previous prime is 1144022413. The next prime is 1144022459. The reversal of 1144022431 is 1342204411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144022431 is a prime.

It is a super-2 number, since 2×1144022431² = 2617574645262299522, 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 (1144022401) 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, 209236 + ... + 214633.

It is an arithmetic number, because the mean of its divisors is an integer number (286112250).

Almost surely, 2^1144022431 is an apocalyptic number.

1144022431 is a deficient number, since it is larger than the sum of its proper divisors (426569).

1144022431 is an equidigital number, since it uses as much as digits as its factorization.

1144022431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426568.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1144022431 is about 33823.4006421590. The cubic root of 1144022431 is about 1045.8711419074.

Adding to 1144022431 its reverse (1342204411), we get a palindrome (2486226842).

The spelling of 1144022431 in words is "one billion, one hundred forty-four million, twenty-two thousand, four hundred thirty-one".