2081438131 has 2 divisors, whose sum is σ = 2081438132. Its totient is φ = 2081438130.

The previous prime is 2081438113. The next prime is 2081438143. The reversal of 2081438131 is 1318341802.

Together with previous prime (2081438113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081438131 is a prime.

It is a super-2 number, since 2×2081438131² = 8664769386361546322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2081438093 and 2081438102.

It is not a weakly prime, because it can be changed into another prime (2081438831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040719065 + 1040719066.

It is an arithmetic number, because the mean of its divisors is an integer number (1040719066).

Almost surely, 2^2081438131 is an apocalyptic number.

2081438131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081438131 is an equidigital number, since it uses as much as digits as its factorization.

2081438131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2081438131 is about 45622.7808337019. The cubic root of 2081438131 is about 1276.7949867800.

Adding to 2081438131 its reverse (1318341802), we get a palindrome (3399779933).

The spelling of 2081438131 in words is "two billion, eighty-one million, four hundred thirty-eight thousand, one hundred thirty-one".