90131827 has 4 divisors (see below), whose sum is σ = 92227960. Its totient is φ = 88035696.

The previous prime is 90131819. The next prime is 90131857. The reversal of 90131827 is 72813109.

90131827 is nontrivially palindromic in base 15.

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 90131827 - 2³ = 90131819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90131857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048002 + ... + 1048087.

It is an arithmetic number, because the mean of its divisors is an integer number (23056990).

Almost surely, 2^90131827 is an apocalyptic number.

90131827 is a deficient number, since it is larger than the sum of its proper divisors (2096133).

90131827 is a wasteful number, since it uses less digits than its factorization.

90131827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096132.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 90131827 is about 9493.7783310966. The cubic root of 90131827 is about 448.3591716689.

The spelling of 90131827 in words is "ninety million, one hundred thirty-one thousand, eight hundred twenty-seven".