2120136631 has 2 divisors, whose sum is σ = 2120136632. Its totient is φ = 2120136630.

The previous prime is 2120136547. The next prime is 2120136649. The reversal of 2120136631 is 1366310212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120136631 is a prime.

It is a super-2 number, since 2×2120136631² = 8989958668216060322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120136596 and 2120136605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120236631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060068315 + 1060068316.

It is an arithmetic number, because the mean of its divisors is an integer number (1060068316).

Almost surely, 2^2120136631 is an apocalyptic number.

2120136631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120136631 is an equidigital number, since it uses as much as digits as its factorization.

2120136631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2120136631 is about 46044.9414268278. The cubic root of 2120136631 is about 1284.6592546838.

Adding to 2120136631 its reverse (1366310212), we get a palindrome (3486446843).

The spelling of 2120136631 in words is "two billion, one hundred twenty million, one hundred thirty-six thousand, six hundred thirty-one".