91305134 has 4 divisors (see below), whose sum is σ = 136957704. Its totient is φ = 45652566.

The previous prime is 91305103. The next prime is 91305143. The reversal of 91305134 is 43150319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43150319 = 3319 ⋅13001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22826282 + ... + 22826285.

It is an arithmetic number, because the mean of its divisors is an integer number (34239426).

Almost surely, 2^91305134 is an apocalyptic number.

91305134 is a deficient number, since it is larger than the sum of its proper divisors (45652570).

91305134 is a wasteful number, since it uses less digits than its factorization.

91305134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45652569.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 91305134 is about 9555.3719969450. The cubic root of 91305134 is about 450.2963217039.

The spelling of 91305134 in words is "ninety-one million, three hundred five thousand, one hundred thirty-four".