131210211031 has 4 divisors (see below), whose sum is σ = 131443267032. Its totient is φ = 130977155032.

The previous prime is 131210210993. The next prime is 131210211089. The reversal of 131210211031 is 130112012131.

It is a happy number.

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 131210211031 - 2²⁵ = 131176656599 is a prime.

It is a super-2 number, since 2×131210211031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131210210996 and 131210211014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131210211931) 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, 116527156 + ... + 116528281.

It is an arithmetic number, because the mean of its divisors is an integer number (32860816758).

Almost surely, 2^131210211031 is an apocalyptic number.

131210211031 is a deficient number, since it is larger than the sum of its proper divisors (233056001).

131210211031 is an equidigital number, since it uses as much as digits as its factorization.

131210211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233056000.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131210211031 its reverse (130112012131), we get a palindrome (261322223162).

The spelling of 131210211031 in words is "one hundred thirty-one billion, two hundred ten million, two hundred eleven thousand, thirty-one".