9801231 has 16 divisors (see below), whose sum is σ = 15095808. Its totient is φ = 5590400.

The previous prime is 9801227. The next prime is 9801251. The reversal of 9801231 is 1321089.

9801231 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9801231 - 2² = 9801227 is a prime.

It is a super-2 number, since 2×9801231² = 192128258230722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8175 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (943488).

Almost surely, 2^9801231 is an apocalyptic number.

9801231 is a deficient number, since it is larger than the sum of its proper divisors (5294577).

9801231 is a wasteful number, since it uses less digits than its factorization.

9801231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 9801231 is about 3130.6917765887. The cubic root of 9801231 is about 214.0064559732.

It can be divided in two parts, 980 and 1231, that added together give a triangular number (2211 = T₆₆).

The spelling of 9801231 in words is "nine million, eight hundred one thousand, two hundred thirty-one".