1002013231312 has 20 divisors (see below), whose sum is σ = 1941428205796. Its totient is φ = 500999500800.

The previous prime is 1002013231283. The next prime is 1002013231319. The reversal of 1002013231312 is 2131323102001.

It can be written as a sum of positive squares in 2 ways, for example, as 745487189056 + 256526042256 = 863416^2 + 506484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1002013231312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002013231319) 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, 827488 + ... + 1639744.

Almost surely, 2^{1002013231312} is an apocalyptic number.

It is an amenable number.

1002013231312 is a deficient number, since it is larger than the sum of its proper divisors (939414974484).

1002013231312 is an equidigital number, since it uses as much as digits as its factorization.

1002013231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889366 (or 889360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1002013231312 its reverse (2131323102001), we get a palindrome (3133336333313).

The spelling of 1002013231312 in words is "one trillion, two billion, thirteen million, two hundred thirty-one thousand, three hundred twelve".