91312322 has 8 divisors (see below), whose sum is σ = 139552956. Its totient is φ = 44794672.

The previous prime is 91312313. The next prime is 91312379. The reversal of 91312322 is 22321319.

It can be written as a sum of positive squares in 2 ways, for example, as 89321401 + 1990921 = 9451^2 + 1411^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430613 + ... + 430824.

Almost surely, 2^91312322 is an apocalyptic number.

91312322 is a deficient number, since it is larger than the sum of its proper divisors (48240634).

91312322 is a wasteful number, since it uses less digits than its factorization.

91312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861492.

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

The square root of 91312322 is about 9555.7481130469. The cubic root of 91312322 is about 450.3081379253.

The spelling of 91312322 in words is "ninety-one million, three hundred twelve thousand, three hundred twenty-two".