90231403 has 4 divisors (see below), whose sum is σ = 90277408. Its totient is φ = 90185400.

The previous prime is 90231397. The next prime is 90231457. The reversal of 90231403 is 30413209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90231403 - 2⁵ = 90231371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90231103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19923 + ... + 24028.

It is an arithmetic number, because the mean of its divisors is an integer number (22569352).

Almost surely, 2^90231403 is an apocalyptic number.

90231403 is a deficient number, since it is larger than the sum of its proper divisors (46005).

90231403 is a wasteful number, since it uses less digits than its factorization.

90231403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46004.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90231403 is about 9499.0211600985. The cubic root of 90231403 is about 448.5242239157.

The spelling of 90231403 in words is "ninety million, two hundred thirty-one thousand, four hundred three".