91012301 has 4 divisors (see below), whose sum is σ = 91144704. Its totient is φ = 90879900.

The previous prime is 91012297. The next prime is 91012307. The reversal of 91012301 is 10321019.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10321019 = 1423 ⋅7253.

It is a cyclic number.

It is not a de Polignac number, because 91012301 - 2² = 91012297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91012301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91012307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65165 + ... + 66546.

It is an arithmetic number, because the mean of its divisors is an integer number (22786176).

Almost surely, 2^91012301 is an apocalyptic number.

It is an amenable number.

91012301 is a deficient number, since it is larger than the sum of its proper divisors (132403).

91012301 is a wasteful number, since it uses less digits than its factorization.

91012301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132402.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 91012301 is about 9540.0367399712. The cubic root of 91012301 is about 449.8144107125.

The spelling of 91012301 in words is "ninety-one million, twelve thousand, three hundred one".