91012703 has 4 divisors (see below), whose sum is σ = 91223328. Its totient is φ = 90802080.

The previous prime is 91012687. The next prime is 91012709. The reversal of 91012703 is 30721019.

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 91012703 - 2⁴ = 91012687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91012709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104663 + ... + 105528.

It is an arithmetic number, because the mean of its divisors is an integer number (22805832).

Almost surely, 2^91012703 is an apocalyptic number.

91012703 is a deficient number, since it is larger than the sum of its proper divisors (210625).

91012703 is a wasteful number, since it uses less digits than its factorization.

91012703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210624.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 91012703 is about 9540.0578090492. The cubic root of 91012703 is about 449.8150729860.

The spelling of 91012703 in words is "ninety-one million, twelve thousand, seven hundred three".