90213231259 has 2 divisors, whose sum is σ = 90213231260. Its totient is φ = 90213231258.

The previous prime is 90213231253. The next prime is 90213231281. The reversal of 90213231259 is 95213231209.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90213231259 - 2⁹ = 90213230747 is a prime.

It is not a weakly prime, because it can be changed into another prime (90213231253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45106615629 + 45106615630.

It is an arithmetic number, because the mean of its divisors is an integer number (45106615630).

Almost surely, 2^90213231259 is an apocalyptic number.

90213231259 is a deficient number, since it is larger than the sum of its proper divisors (1).

90213231259 is an equidigital number, since it uses as much as digits as its factorization.

90213231259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 90213231259 in words is "ninety billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred fifty-nine".