91023003 has 6 divisors (see below), whose sum is σ = 131477684. Its totient is φ = 60681996.

The previous prime is 91022989. The next prime is 91023007. The reversal of 91023003 is 30032019.

It is not a de Polignac number, because 91023003 - 2¹³ = 91014811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91023007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5056825 + ... + 5056842.

Almost surely, 2^91023003 is an apocalyptic number.

91023003 is a deficient number, since it is larger than the sum of its proper divisors (40454681).

91023003 is a wasteful number, since it uses less digits than its factorization.

91023003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10113673 (or 10113670 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 91023003 is about 9540.5976227907. The cubic root of 91023003 is about 449.8320410221.

The spelling of 91023003 in words is "ninety-one million, twenty-three thousand, three".