91014143 has 6 divisors (see below), whose sum is σ = 100040472. Its totient is φ = 82740020.

The previous prime is 91014139. The next prime is 91014149. The reversal of 91014143 is 34141019.

It is not a de Polignac number, because 91014143 - 2² = 91014139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91014149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375971 + ... + 376212.

It is an arithmetic number, because the mean of its divisors is an integer number (16673412).

Almost surely, 2^91014143 is an apocalyptic number.

91014143 is a deficient number, since it is larger than the sum of its proper divisors (9026329).

91014143 is a wasteful number, since it uses less digits than its factorization.

91014143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752205 (or 752194 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 91014143 is about 9540.1332799914. The cubic root of 91014143 is about 449.8174452933.

The spelling of 91014143 in words is "ninety-one million, fourteen thousand, one hundred forty-three".