91214526323 has 4 divisors (see below), whose sum is σ = 91774124808. Its totient is φ = 90654927840.

The previous prime is 91214526313. The next prime is 91214526371. The reversal of 91214526323 is 32362541219.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91214526323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91214526313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279798998 + ... + 279799323.

It is an arithmetic number, because the mean of its divisors is an integer number (22943531202).

Almost surely, 2^91214526323 is an apocalyptic number.

91214526323 is a deficient number, since it is larger than the sum of its proper divisors (559598485).

91214526323 is a wasteful number, since it uses less digits than its factorization.

91214526323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559598484.

The product of its digits is 77760, while the sum is 38.

The spelling of 91214526323 in words is "ninety-one billion, two hundred fourteen million, five hundred twenty-six thousand, three hundred twenty-three".