90807231 has 8 divisors (see below), whose sum is σ = 121242240. Its totient is φ = 60455192.

The previous prime is 90807221. The next prime is 90807239. The reversal of 90807231 is 13270809.

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 90807231 - 2¹³ = 90799039 is a prime.

It is a super-2 number, since 2×90807231² = 16491906403774722, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90807239) 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, 18141 + ... + 22598.

It is an arithmetic number, because the mean of its divisors is an integer number (15155280).

Almost surely, 2^90807231 is an apocalyptic number.

90807231 is a deficient number, since it is larger than the sum of its proper divisors (30435009).

90807231 is a wasteful number, since it uses less digits than its factorization.

90807231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41485.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 90807231 is about 9529.2828166657. The cubic root of 90807231 is about 449.4763142560.

The spelling of 90807231 in words is "ninety million, eight hundred seven thousand, two hundred thirty-one".