215165654231 has 8 divisors (see below), whose sum is σ = 234783066000. Its totient is φ = 195557725440.

The previous prime is 215165654201. The next prime is 215165654239. The reversal of 215165654231 is 132456561512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215165654231 - 2⁶ = 215165654167 is a prime.

It is a super-2 number, since 2×215165654231² (a number of 23 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 (215165654239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323256 + ... + 2414093.

It is an arithmetic number, because the mean of its divisors is an integer number (29347883250).

Almost surely, 2^215165654231 is an apocalyptic number.

215165654231 is a deficient number, since it is larger than the sum of its proper divisors (19617411769).

215165654231 is a wasteful number, since it uses less digits than its factorization.

215165654231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741489.

The product of its digits is 216000, while the sum is 41.

The spelling of 215165654231 in words is "two hundred fifteen billion, one hundred sixty-five million, six hundred fifty-four thousand, two hundred thirty-one".