1365231144 has 64 divisors (see below), whose sum is σ = 3573460800. Its totient is φ = 434072576.

The previous prime is 1365231139. The next prime is 1365231157. The reversal of 1365231144 is 4411325631.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45952 + ... + 69584.

It is an arithmetic number, because the mean of its divisors is an integer number (55835325).

Almost surely, 2^1365231144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1365231144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1786730400).

1365231144 is an abundant number, since it is smaller than the sum of its proper divisors (2208229656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1365231144 is a wasteful number, since it uses less digits than its factorization.

1365231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23754 (or 23750 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1365231144 is about 36949.0344122820. The cubic root of 1365231144 is about 1109.3503608774.

Adding to 1365231144 its reverse (4411325631), we get a palindrome (5776556775).

The spelling of 1365231144 in words is "one billion, three hundred sixty-five million, two hundred thirty-one thousand, one hundred forty-four".