1231213313330 has 256 divisors, whose sum is σ = 3001134882816. Its totient is φ = 351203973120.

The previous prime is 1231213313257. The next prime is 1231213313339. The reversal of 1231213313330 is 333133121321.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231213313330.

It is not an unprimeable number, because it can be changed into a prime (1231213313339) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1006715099 + ... + 1006716321.

It is an arithmetic number, because the mean of its divisors is an integer number (11723183136).

Almost surely, 2^{1231213313330} is an apocalyptic number.

1231213313330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231213313330 is an abundant number, since it is smaller than the sum of its proper divisors (1769921569486).

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

1231213313330 is a wasteful number, since it uses less digits than its factorization.

1231213313330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1231213313330 its reverse (333133121321), we get a palindrome (1564346434651).

The spelling of 1231213313330 in words is "one trillion, two hundred thirty-one billion, two hundred thirteen million, three hundred thirteen thousand, three hundred thirty".