90200231 has 8 divisors (see below), whose sum is σ = 98531328. Its totient is φ = 81891000.

The previous prime is 90200219. The next prime is 90200233. The reversal of 90200231 is 13200209.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90200231 is a prime.

It is a super-2 number, since 2×90200231² = 16272163344906722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90200233) 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, 3866 + ... + 13976.

It is an arithmetic number, because the mean of its divisors is an integer number (12316416).

Almost surely, 2^90200231 is an apocalyptic number.

90200231 is a deficient number, since it is larger than the sum of its proper divisors (8331097).

90200231 is a wasteful number, since it uses less digits than its factorization.

90200231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10933.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 90200231 is about 9497.3802177232. The cubic root of 90200231 is about 448.4725678145.

The spelling of 90200231 in words is "ninety million, two hundred thousand, two hundred thirty-one".