166100131 has 2 divisors, whose sum is σ = 166100132. Its totient is φ = 166100130.

The previous prime is 166100117. The next prime is 166100153. The reversal of 166100131 is 131001661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166100131 is a prime.

It is a super-2 number, since 2×166100131² = 55178507036434322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166100099 and 166100108.

It is not a weakly prime, because it can be changed into another prime (166100101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83050065 + 83050066.

It is an arithmetic number, because the mean of its divisors is an integer number (83050066).

Almost surely, 2^166100131 is an apocalyptic number.

166100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

166100131 is an equidigital number, since it uses as much as digits as its factorization.

166100131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 166100131 is about 12887.9839773333. The cubic root of 166100131 is about 549.6969470965.

Adding to 166100131 its reverse (131001661), we get a palindrome (297101792).

The spelling of 166100131 in words is "one hundred sixty-six million, one hundred thousand, one hundred thirty-one".