91400131322 has 4 divisors (see below), whose sum is σ = 137100196986. Its totient is φ = 45700065660.

The previous prime is 91400131297. The next prime is 91400131331. The reversal of 91400131322 is 22313100419.

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

It can be written as a sum of positive squares in only one way, i.e., 78445366561 + 12954764761 = 280081^2 + 113819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91400131291 and 91400131300.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22850032829 + ... + 22850032832.

Almost surely, 2^91400131322 is an apocalyptic number.

91400131322 is a deficient number, since it is larger than the sum of its proper divisors (45700065664).

91400131322 is a wasteful number, since it uses less digits than its factorization.

91400131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45700065663.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 91400131322 in words is "ninety-one billion, four hundred million, one hundred thirty-one thousand, three hundred twenty-two".