91003012230321 has 12 divisors (see below), whose sum is σ = 131457458976948. Its totient is φ = 60664676266464.

The previous prime is 91003012230307. The next prime is 91003012230329. The reversal of 91003012230321 is 12303221030019.

91003012230321 is a `hidden beast` number, since 9 + 1 + 0 + 0 + 301 + 2 + 2 + 30 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85245315999921 + 5757696230400 = 9232839^2 + 2399520^2 .

It is a de Polignac number, because none of the positive numbers 2^k-91003012230321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91003012230329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333068670 + ... + 333341783.

It is an arithmetic number, because the mean of its divisors is an integer number (10954788248079).

Almost surely, 2^{91003012230321} is an apocalyptic number.

It is an amenable number.

91003012230321 is a deficient number, since it is larger than the sum of its proper divisors (40454446746627).

91003012230321 is a wasteful number, since it uses less digits than its factorization.

91003012230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666425632 (or 666425629 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 91003012230321 in words is "ninety-one trillion, three billion, twelve million, two hundred thirty thousand, three hundred twenty-one".