231208502159 has 16 divisors (see below), whose sum is σ = 253294905600. Its totient is φ = 210067597824.

The previous prime is 231208502153. The next prime is 231208502209. The reversal of 231208502159 is 951205802132.

It is a cyclic number.

It is not a de Polignac number, because 231208502159 - 2¹² = 231208498063 is a prime.

It is a super-2 number, since 2×231208502159² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231208502153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3017282 + ... + 3092960.

It is an arithmetic number, because the mean of its divisors is an integer number (15830931600).

Almost surely, 2^231208502159 is an apocalyptic number.

231208502159 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

231208502159 is a deficient number, since it is larger than the sum of its proper divisors (22086403441).

231208502159 is a wasteful number, since it uses less digits than its factorization.

231208502159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81922.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 231208502159 in words is "two hundred thirty-one billion, two hundred eight million, five hundred two thousand, one hundred fifty-nine".