2113163113531 has 2 divisors, whose sum is σ = 2113163113532. Its totient is φ = 2113163113530.

The previous prime is 2113163113517. The next prime is 2113163113577. The reversal of 2113163113531 is 1353113613112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113163113531 - 2⁷ = 2113163113403 is a prime.

It is a super-2 number, since 2×2113163113531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113163113493 and 2113163113502.

It is not a weakly prime, because it can be changed into another prime (2113163123531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056581556765 + 1056581556766.

It is an arithmetic number, because the mean of its divisors is an integer number (1056581556766).

Almost surely, 2^{2113163113531} is an apocalyptic number.

2113163113531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113163113531 is an equidigital number, since it uses as much as digits as its factorization.

2113163113531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

Adding to 2113163113531 its reverse (1353113613112), we get a palindrome (3466276726643).

The spelling of 2113163113531 in words is "two trillion, one hundred thirteen billion, one hundred sixty-three million, one hundred thirteen thousand, five hundred thirty-one".