2138094906231 has 16 divisors (see below), whose sum is σ = 2976330839040. Its totient is φ = 1362694043040.

The previous prime is 2138094906223. The next prime is 2138094906253. The reversal of 2138094906231 is 1326094908312.

It is not a de Polignac number, because 2138094906231 - 2³ = 2138094906223 is a prime.

It is a super-2 number, since 2×2138094906231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138094901231) 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 in 15 ways as a sum of consecutive naturals, for example, 8151736 + ... + 8409933.

It is an arithmetic number, because the mean of its divisors is an integer number (186020677440).

Almost surely, 2^{2138094906231} is an apocalyptic number.

2138094906231 is a deficient number, since it is larger than the sum of its proper divisors (838235932809).

2138094906231 is a wasteful number, since it uses less digits than its factorization.

2138094906231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16563566.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 2138094906231 in words is "two trillion, one hundred thirty-eight billion, ninety-four million, nine hundred six thousand, two hundred thirty-one".