206174140368231 has 24 divisors (see below), whose sum is σ = 319982308740864. Its totient is φ = 117739369982640.

The previous prime is 206174140368223. The next prime is 206174140368239. The reversal of 206174140368231 is 132863041471602.

It is an interprime number because it is at equal distance from previous prime (206174140368223) and next prime (206174140368239).

It is not a de Polignac number, because 206174140368231 - 2³ = 206174140368223 is a prime.

It is a super-2 number, since 2×206174140368231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206174140368239) 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 23 ways as a sum of consecutive naturals, for example, 442769565 + ... + 443234966.

It is an arithmetic number, because the mean of its divisors is an integer number (13332596197536).

Almost surely, 2^{206174140368231} is an apocalyptic number.

206174140368231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

206174140368231 is a deficient number, since it is larger than the sum of its proper divisors (113808168372633).

206174140368231 is a wasteful number, since it uses less digits than its factorization.

206174140368231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886006131 (or 886006124 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 206174140368231 in words is "two hundred six trillion, one hundred seventy-four billion, one hundred forty million, three hundred sixty-eight thousand, two hundred thirty-one".