90031223033 has 2 divisors, whose sum is σ = 90031223034. Its totient is φ = 90031223032.

The previous prime is 90031223027. The next prime is 90031223101. The reversal of 90031223033 is 33032213009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89833876729 + 197346304 = 299723^2 + 14048^2 .

It is an emirp because it is prime and its reverse (33032213009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90031223033 - 2⁴ = 90031223017 is a prime.

It is a super-2 number, since 2×90031223033² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90031222993 and 90031223011.

It is not a weakly prime, because it can be changed into another prime (90031223003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45015611516 + 45015611517.

It is an arithmetic number, because the mean of its divisors is an integer number (45015611517).

Almost surely, 2^90031223033 is an apocalyptic number.

It is an amenable number.

90031223033 is a deficient number, since it is larger than the sum of its proper divisors (1).

90031223033 is an equidigital number, since it uses as much as digits as its factorization.

90031223033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

The spelling of 90031223033 in words is "ninety billion, thirty-one million, two hundred twenty-three thousand, thirty-three".