91031102 has 16 divisors (see below), whose sum is σ = 142853760. Its totient is φ = 43423512.

The previous prime is 91031089. The next prime is 91031117. The reversal of 91031102 is 20113019.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16913 + ... + 21635.

It is an arithmetic number, because the mean of its divisors is an integer number (8928360).

Almost surely, 2^91031102 is an apocalyptic number.

91031102 is a deficient number, since it is larger than the sum of its proper divisors (51822658).

91031102 is a wasteful number, since it uses less digits than its factorization.

91031102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5167.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 91031102 is about 9541.0220626514. The cubic root of 91031102 is about 449.8453822712.

The spelling of 91031102 in words is "ninety-one million, thirty-one thousand, one hundred two".