91312377 has 8 divisors (see below), whose sum is σ = 131115264. Its totient is φ = 56192208.

The previous prime is 91312313. The next prime is 91312379. The reversal of 91312377 is 77321319.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91312377 - 2⁶ = 91312313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91312379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170633 + ... + 1170710.

It is an arithmetic number, because the mean of its divisors is an integer number (16389408).

Almost surely, 2^91312377 is an apocalyptic number.

It is an amenable number.

91312377 is a deficient number, since it is larger than the sum of its proper divisors (39802887).

91312377 is a wasteful number, since it uses less digits than its factorization.

91312377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341359.

The product of its digits is 7938, while the sum is 33.

The square root of 91312377 is about 9555.7509908955. The cubic root of 91312377 is about 450.3082283364.

The spelling of 91312377 in words is "ninety-one million, three hundred twelve thousand, three hundred seventy-seven".