131020311203 has 4 divisors (see below), whose sum is σ = 131259837000. Its totient is φ = 130780785408.

The previous prime is 131020311199. The next prime is 131020311277. The reversal of 131020311203 is 302113020131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131020311203 - 2² = 131020311199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131020314203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119762078 + ... + 119763171.

It is an arithmetic number, because the mean of its divisors is an integer number (32814959250).

Almost surely, 2^131020311203 is an apocalyptic number.

131020311203 is a deficient number, since it is larger than the sum of its proper divisors (239525797).

131020311203 is an equidigital number, since it uses as much as digits as its factorization.

131020311203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239525796.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131020311203 its reverse (302113020131), we get a palindrome (433133331334).

The spelling of 131020311203 in words is "one hundred thirty-one billion, twenty million, three hundred eleven thousand, two hundred three".