90213311 has 8 divisors (see below), whose sum is σ = 95462400. Its totient is φ = 85014360.

The previous prime is 90213293. The next prime is 90213313. The reversal of 90213311 is 11331209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90213311 - 2⁶ = 90213247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90213313) 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, 8801 + ... + 16058.

It is an arithmetic number, because the mean of its divisors is an integer number (11932800).

Almost surely, 2^90213311 is an apocalyptic number.

90213311 is a deficient number, since it is larger than the sum of its proper divisors (5249089).

90213311 is a wasteful number, since it uses less digits than its factorization.

90213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25069.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 90213311 is about 9498.0688037095. The cubic root of 90213311 is about 448.4942445427.

The spelling of 90213311 in words is "ninety million, two hundred thirteen thousand, three hundred eleven".