1440131315 has 48 divisors (see below), whose sum is σ = 2208280320. Its totient is φ = 894801600.

The previous prime is 1440131309. The next prime is 1440131333. The reversal of 1440131315 is 5131310441.

It is a happy number.

It is not a de Polignac number, because 1440131315 - 2¹² = 1440127219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100340 + ... + 113790.

It is an arithmetic number, because the mean of its divisors is an integer number (46005840).

Almost surely, 2^1440131315 is an apocalyptic number.

1440131315 is a deficient number, since it is larger than the sum of its proper divisors (768149005).

1440131315 is a wasteful number, since it uses less digits than its factorization.

1440131315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13512 (or 13505 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1440131315 is about 37949.0621096227. The cubic root of 1440131315 is about 1129.2775592100.

Adding to 1440131315 its reverse (5131310441), we get a palindrome (6571441756).

The spelling of 1440131315 in words is "one billion, four hundred forty million, one hundred thirty-one thousand, three hundred fifteen".