20102131313123 has 8 divisors (see below), whose sum is σ = 21203588209920. Its totient is φ = 19005019414920.

The previous prime is 20102131313107. The next prime is 20102131313171. The reversal of 20102131313123 is 32131313120102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20102131313123 - 2⁴ = 20102131313107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102131313423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086240143 + ... + 1086258648.

It is an arithmetic number, because the mean of its divisors is an integer number (2650448526240).

Almost surely, 2^{20102131313123} is an apocalyptic number.

20102131313123 is a deficient number, since it is larger than the sum of its proper divisors (1101456896797).

20102131313123 is a wasteful number, since it uses less digits than its factorization.

20102131313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172499297.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20102131313123 its reverse (32131313120102), we get a palindrome (52233444433225).

The spelling of 20102131313123 in words is "twenty trillion, one hundred two billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-three".