131311020123203 has 32 divisors (see below), whose sum is σ = 139527654604800. Its totient is φ = 123373725177600.

The previous prime is 131311020123193. The next prime is 131311020123259. The reversal of 131311020123203 is 302321020113131.

It is a cyclic number.

It is not a de Polignac number, because 131311020123203 - 2¹² = 131311020119107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131311020123403) 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, 770569133 + ... + 770739521.

It is an arithmetic number, because the mean of its divisors is an integer number (4360239206400).

Almost surely, 2^{131311020123203} is an apocalyptic number.

131311020123203 is a deficient number, since it is larger than the sum of its proper divisors (8216634481597).

131311020123203 is a wasteful number, since it uses less digits than its factorization.

131311020123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173403.

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

Adding to 131311020123203 its reverse (302321020113131), we get a palindrome (433632040236334).

The spelling of 131311020123203 in words is "one hundred thirty-one trillion, three hundred eleven billion, twenty million, one hundred twenty-three thousand, two hundred three".