91213034 has 16 divisors (see below), whose sum is σ = 157114080. Its totient is φ = 39278160.

The previous prime is 91213013. The next prime is 91213037. The reversal of 91213034 is 43031219.

It is not an unprimeable number, because it can be changed into a prime (91213037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108689 + ... + 109524.

It is an arithmetic number, because the mean of its divisors is an integer number (9819630).

Almost surely, 2^91213034 is an apocalyptic number.

91213034 is a deficient number, since it is larger than the sum of its proper divisors (65901046).

91213034 is a wasteful number, since it uses less digits than its factorization.

91213034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218245.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 91213034 is about 9550.5515024003. The cubic root of 91213034 is about 450.1448652937.

The spelling of 91213034 in words is "ninety-one million, two hundred thirteen thousand, thirty-four".