131122002113 has 4 divisors (see below), whose sum is σ = 132002015700. Its totient is φ = 130241988528.

The previous prime is 131122002101. The next prime is 131122002161. The reversal of 131122002113 is 311200221131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311200221131 = 23 ⋅13530444397.

It can be written as a sum of positive squares in 2 ways, for example, as 58036664464 + 73085337649 = 240908^2 + 270343^2 .

It is a cyclic number.

It is not a de Polignac number, because 131122002113 - 2⁴ = 131122002097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131122002091 and 131122002100.

It is not an unprimeable number, because it can be changed into a prime (131122002013) 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, 440006570 + ... + 440006867.

It is an arithmetic number, because the mean of its divisors is an integer number (33000503925).

Almost surely, 2^131122002113 is an apocalyptic number.

It is an amenable number.

131122002113 is a deficient number, since it is larger than the sum of its proper divisors (880013587).

131122002113 is an equidigital number, since it uses as much as digits as its factorization.

131122002113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880013586.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131122002113 its reverse (311200221131), we get a palindrome (442322223244).

The spelling of 131122002113 in words is "one hundred thirty-one billion, one hundred twenty-two million, two thousand, one hundred thirteen".