20131232402343 has 32 divisors (see below), whose sum is σ = 27792046275840. Its totient is φ = 12946450890240.

The previous prime is 20131232402341. The next prime is 20131232402357. The reversal of 20131232402343 is 34320423213102.

It is a happy number.

It is not a de Polignac number, because 20131232402343 - 2¹ = 20131232402341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20131232402343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131232402341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1170207780 + ... + 1170224982.

It is an arithmetic number, because the mean of its divisors is an integer number (868501446120).

Almost surely, 2^{20131232402343} is an apocalyptic number.

20131232402343 is a deficient number, since it is larger than the sum of its proper divisors (7660813873497).

20131232402343 is a wasteful number, since it uses less digits than its factorization.

20131232402343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28479.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20131232402343 its reverse (34320423213102), we get a palindrome (54451655615445).

The spelling of 20131232402343 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty-two million, four hundred two thousand, three hundred forty-three".