97143811 has 4 divisors (see below), whose sum is σ = 97176400. Its totient is φ = 97111224.

The previous prime is 97143793. The next prime is 97143817. The reversal of 97143811 is 11834179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11834179 = 7 ⋅1690597.

It is a cyclic number.

It is not a de Polignac number, because 97143811 - 2⁵ = 97143779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97143817) by changing a digit.

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, 11316 + ... + 17953.

It is an arithmetic number, because the mean of its divisors is an integer number (24294100).

Almost surely, 2^97143811 is an apocalyptic number.

97143811 is a deficient number, since it is larger than the sum of its proper divisors (32589).

97143811 is a wasteful number, since it uses less digits than its factorization.

97143811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32588.

The product of its digits is 6048, while the sum is 34.

The square root of 97143811 is about 9856.1559951129. The cubic root of 97143811 is about 459.6970453202.

The spelling of 97143811 in words is "ninety-seven million, one hundred forty-three thousand, eight hundred eleven".