1523440321312 has 48 divisors (see below), whose sum is σ = 3691413093312. Its totient is φ = 602679686400.

The previous prime is 1523440321303. The next prime is 1523440321339. The reversal of 1523440321312 is 2131230443251.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261576814 + ... + 261582637.

It is an arithmetic number, because the mean of its divisors is an integer number (76904439444).

Almost surely, 2^{1523440321312} is an apocalyptic number.

It is an amenable number.

1523440321312 is an abundant number, since it is smaller than the sum of its proper divisors (2167972772000).

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

1523440321312 is a wasteful number, since it uses less digits than its factorization.

1523440321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523159481 (or 523159473 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 1523440321312 its reverse (2131230443251), we get a palindrome (3654670764563).

The spelling of 1523440321312 in words is "one trillion, five hundred twenty-three billion, four hundred forty million, three hundred twenty-one thousand, three hundred twelve".