20131313202102 has 64 divisors (see below), whose sum is σ = 40932147674880. Its totient is φ = 6599591977344.

The previous prime is 20131313202073. The next prime is 20131313202103. The reversal of 20131313202102 is 20120231313102.

It is a super-2 number, since 2×20131313202102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131313202103) 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, 1093311448 + ... + 1093329860.

It is an arithmetic number, because the mean of its divisors is an integer number (639564807420).

Almost surely, 2^{20131313202102} is an apocalyptic number.

20131313202102 is an abundant number, since it is smaller than the sum of its proper divisors (20800834472778).

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

20131313202102 is a wasteful number, since it uses less digits than its factorization.

20131313202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28317.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20131313202102 its reverse (20120231313102), we get a palindrome (40251544515204).

The spelling of 20131313202102 in words is "twenty trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred two thousand, one hundred two".