131121313033 has 4 divisors (see below), whose sum is σ = 131300196868. Its totient is φ = 130942429200.

The previous prime is 131121312989. The next prime is 131121313049. The reversal of 131121313033 is 330313121131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128976511689 + 2144801344 = 359133^2 + 46312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131121313033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131121312995 and 131121313013.

It is not an unprimeable number, because it can be changed into a prime (131121313093) 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, 89440818 + ... + 89442283.

It is an arithmetic number, because the mean of its divisors is an integer number (32825049217).

Almost surely, 2^131121313033 is an apocalyptic number.

It is an amenable number.

131121313033 is a deficient number, since it is larger than the sum of its proper divisors (178883835).

131121313033 is an equidigital number, since it uses as much as digits as its factorization.

131121313033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178883834.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 131121313033 its reverse (330313121131), we get a palindrome (461434434164).

The spelling of 131121313033 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred thirteen thousand, thirty-three".