131121110233 has 4 divisors (see below), whose sum is σ = 131154899508. Its totient is φ = 131087320960.

The previous prime is 131121110203. The next prime is 131121110269. The reversal of 131121110233 is 332011121131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332011121131 = 4447 ⋅74659573.

It can be written as a sum of positive squares in 2 ways, for example, as 77349065689 + 53772044544 = 278117^2 + 231888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131121110233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131121110233.

It is not an unprimeable number, because it can be changed into a prime (131121110203) 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, 16888816 + ... + 16896577.

It is an arithmetic number, because the mean of its divisors is an integer number (32788724877).

Almost surely, 2^131121110233 is an apocalyptic number.

It is an amenable number.

131121110233 is a deficient number, since it is larger than the sum of its proper divisors (33789275).

131121110233 is an equidigital number, since it uses as much as digits as its factorization.

131121110233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33789274.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131121110233 its reverse (332011121131), we get a palindrome (463132231364).

The spelling of 131121110233 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred thirty-three".