1212341231343 has 16 divisors (see below), whose sum is σ = 1867135159296. Its totient is φ = 691531539840.

The previous prime is 1212341231329. The next prime is 1212341231359. The reversal of 1212341231343 is 3431321432121.

It is not a de Polignac number, because 1212341231343 - 2¹³ = 1212341223151 is a prime.

It is a super-2 number, since 2×1212341231343² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212341231343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212341231303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080517471 + ... + 1080518592.

It is an arithmetic number, because the mean of its divisors is an integer number (116695947456).

Almost surely, 2^{1212341231343} is an apocalyptic number.

1212341231343 is a deficient number, since it is larger than the sum of its proper divisors (654793927953).

1212341231343 is a wasteful number, since it uses less digits than its factorization.

1212341231343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161036094.

The product of its digits is 10368, while the sum is 30.

Adding to 1212341231343 its reverse (3431321432121), we get a palindrome (4643662663464).

The spelling of 1212341231343 in words is "one trillion, two hundred twelve billion, three hundred forty-one million, two hundred thirty-one thousand, three hundred forty-three".