1313213021000 has 32 divisors (see below), whose sum is σ = 3072918471480. Its totient is φ = 525285208000.

The previous prime is 1313213020949. The next prime is 1313213021017. The reversal of 1313213021000 is 1203123131.

It can be written as a sum of positive squares in 4 ways, for example, as 113500262404 + 1199712758596 = 336898^2 + 1095314^2 .

It is a super-3 number, since 3×1313213021000³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313213021000.

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, 656605511 + ... + 656607510.

Almost surely, 2^{1313213021000} is an apocalyptic number.

1313213021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313213021000 is an abundant number, since it is smaller than the sum of its proper divisors (1759705450480).

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

1313213021000 is a wasteful number, since it uses less digits than its factorization.

1313213021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313213042 (or 1313213028 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1313213021000 its reverse (1203123131), we get a palindrome (1314416144131).

The spelling of 1313213021000 in words is "one trillion, three hundred thirteen billion, two hundred thirteen million, twenty-one thousand".