166531314534331 has 8 divisors (see below), whose sum is σ = 166547637344000. Its totient is φ = 166514992214760.

The previous prime is 166531314534311. The next prime is 166531314534341. The reversal of 166531314534331 is 133435413135661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 166531314534331 - 2³³ = 166522724599739 is a prime.

It is a super-2 number, since 2×166531314534331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166531314534311) 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, 1322044330 + ... + 1322170288.

It is an arithmetic number, because the mean of its divisors is an integer number (20818454668000).

Almost surely, 2^{166531314534331} is an apocalyptic number.

166531314534331 is a deficient number, since it is larger than the sum of its proper divisors (16322809669).

166531314534331 is a wasteful number, since it uses less digits than its factorization.

166531314534331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245049.

The product of its digits is 3499200, while the sum is 49.

Adding to 166531314534331 its reverse (133435413135661), we get a palindrome (299966727669992).

The spelling of 166531314534331 in words is "one hundred sixty-six trillion, five hundred thirty-one billion, three hundred fourteen million, five hundred thirty-four thousand, three hundred thirty-one".