97813281 has 8 divisors (see below), whose sum is σ = 130463424. Its totient is φ = 65186000.

The previous prime is 97813279. The next prime is 97813307. The reversal of 97813281 is 18231879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97813281 - 2¹ = 97813279 is a prime.

It is a super-2 number, since 2×97813281² = 19134875879969922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97813231) 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 7 ways as a sum of consecutive naturals, for example, 13540 + ... + 19466.

It is an arithmetic number, because the mean of its divisors is an integer number (16307928).

Almost surely, 2^97813281 is an apocalyptic number.

It is an amenable number.

97813281 is a deficient number, since it is larger than the sum of its proper divisors (32650143).

97813281 is a wasteful number, since it uses less digits than its factorization.

97813281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431.

The product of its digits is 24192, while the sum is 39.

The square root of 97813281 is about 9890.0597065943. The cubic root of 97813281 is about 460.7506348650.

The spelling of 97813281 in words is "ninety-seven million, eight hundred thirteen thousand, two hundred eighty-one".