166828031 has 4 divisors (see below), whose sum is σ = 166870632. Its totient is φ = 166785432.

The previous prime is 166828027. The next prime is 166828049. The reversal of 166828031 is 130828661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166828031 - 2² = 166828027 is a prime.

It is a super-2 number, since 2×166828031² = 55663183854673922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166827982 and 166828000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166825031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14756 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (41717658).

Almost surely, 2^166828031 is an apocalyptic number.

166828031 is a deficient number, since it is larger than the sum of its proper divisors (42601).

166828031 is an equidigital number, since it uses as much as digits as its factorization.

166828031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42600.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 166828031 is about 12916.1925891495. The cubic root of 166828031 is about 550.4987552916.

The spelling of 166828031 in words is "one hundred sixty-six million, eight hundred twenty-eight thousand, thirty-one".