9897031 has 4 divisors (see below), whose sum is σ = 10138464. Its totient is φ = 9655600.

The previous prime is 9897023. The next prime is 9897037. The reversal of 9897031 is 1307989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1307989 = 211 ⋅6199.

It is a cyclic number.

It is not a de Polignac number, because 9897031 - 2³ = 9897023 is a prime.

It is a super-2 number, since 2×9897031² = 195902445229922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9897037) 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, 120655 + ... + 120736.

It is an arithmetic number, because the mean of its divisors is an integer number (2534616).

Almost surely, 2^9897031 is an apocalyptic number.

9897031 is a deficient number, since it is larger than the sum of its proper divisors (241433).

9897031 is a wasteful number, since it uses less digits than its factorization.

9897031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241432.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 9897031 is about 3145.9547040604. The cubic root of 9897031 is about 214.7014496938.

The spelling of 9897031 in words is "nine million, eight hundred ninety-seven thousand, thirty-one".