90222331 has 8 divisors (see below), whose sum is σ = 91206000. Its totient is φ = 89244000.

The previous prime is 90222323. The next prime is 90222343. The reversal of 90222331 is 13322209.

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 90222331 - 2³ = 90222323 is a prime.

It is a super-2 number, since 2×90222331² = 16280138022147122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90222361) 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, 38956 + ... + 41206.

It is an arithmetic number, because the mean of its divisors is an integer number (11400750).

Almost surely, 2^90222331 is an apocalyptic number.

90222331 is a deficient number, since it is larger than the sum of its proper divisors (983669).

90222331 is a wasteful number, since it uses less digits than its factorization.

90222331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90222331 is about 9498.5436252091. The cubic root of 90222331 is about 448.5091916468.

The spelling of 90222331 in words is "ninety million, two hundred twenty-two thousand, three hundred thirty-one".