90331123 has 2 divisors, whose sum is σ = 90331124. Its totient is φ = 90331122.

The previous prime is 90331093. The next prime is 90331151. The reversal of 90331123 is 32113309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90331123 - 2¹³ = 90322931 is a prime.

It is a super-2 number, since 2×90331123² = 16319423564882258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90331094 and 90331103.

It is not a weakly prime, because it can be changed into another prime (90331223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45165561 + 45165562.

It is an arithmetic number, because the mean of its divisors is an integer number (45165562).

Almost surely, 2^90331123 is an apocalyptic number.

90331123 is a deficient number, since it is larger than the sum of its proper divisors (1).

90331123 is an equidigital number, since it uses as much as digits as its factorization.

90331123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 90331123 is about 9504.2686725492. The cubic root of 90331123 is about 448.6893932008.

The spelling of 90331123 in words is "ninety million, three hundred thirty-one thousand, one hundred twenty-three".