2145200636231 has 2 divisors, whose sum is σ = 2145200636232. Its totient is φ = 2145200636230.

The previous prime is 2145200636197. The next prime is 2145200636273. The reversal of 2145200636231 is 1326360025412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145200636231 is a prime.

It is a super-2 number, since 2×2145200636231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2145200636191 and 2145200636200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145200686231) 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, 1072600318115 + 1072600318116.

It is an arithmetic number, because the mean of its divisors is an integer number (1072600318116).

Almost surely, 2^{2145200636231} is an apocalyptic number.

2145200636231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145200636231 is an equidigital number, since it uses as much as digits as its factorization.

2145200636231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 2145200636231 in words is "two trillion, one hundred forty-five billion, two hundred million, six hundred thirty-six thousand, two hundred thirty-one".