90231233201 has 2 divisors, whose sum is σ = 90231233202. Its totient is φ = 90231233200.

The previous prime is 90231233189. The next prime is 90231233227. The reversal of 90231233201 is 10233213209.

It is an a-pointer prime, because the next prime (90231233227) can be obtained adding 90231233201 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68761950625 + 21469282576 = 262225^2 + 146524^2 .

It is a cyclic number.

It is not a de Polignac number, because 90231233201 - 2¹⁸ = 90230971057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90231233101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45115616600 + 45115616601.

It is an arithmetic number, because the mean of its divisors is an integer number (45115616601).

Almost surely, 2^90231233201 is an apocalyptic number.

It is an amenable number.

90231233201 is a deficient number, since it is larger than the sum of its proper divisors (1).

90231233201 is an equidigital number, since it uses as much as digits as its factorization.

90231233201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 90231233201 in words is "ninety billion, two hundred thirty-one million, two hundred thirty-three thousand, two hundred one".