166002031 has 8 divisors (see below), whose sum is σ = 188180720. Its totient is φ = 145167552.

The previous prime is 166002029. The next prime is 166002037. The reversal of 166002031 is 130200661.

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 166002031 - 2¹ = 166002029 is a prime.

It is a super-2 number, since 2×166002031² = 55113348592249922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166002037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335790 + ... + 336283.

It is an arithmetic number, because the mean of its divisors is an integer number (23522590).

Almost surely, 2^166002031 is an apocalyptic number.

166002031 is a deficient number, since it is larger than the sum of its proper divisors (22178689).

166002031 is a wasteful number, since it uses less digits than its factorization.

166002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672105.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 166002031 is about 12884.1775445699. The cubic root of 166002031 is about 549.5887073861.

Adding to 166002031 its reverse (130200661), we get a palindrome (296202692).

The spelling of 166002031 in words is "one hundred sixty-six million, two thousand, thirty-one".