9312381 has 32 divisors (see below), whose sum is σ = 15227520. Its totient is φ = 5588352.

The previous prime is 9312377. The next prime is 9312389. The reversal of 9312381 is 1832139.

9312381 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 not a de Polignac number, because 9312381 - 2² = 9312377 is a prime.

It is a super-2 number, since 2×9312381² = 173440879778322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9312389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14785 + ... + 15401.

It is an arithmetic number, because the mean of its divisors is an integer number (475860).

Almost surely, 2^9312381 is an apocalyptic number.

It is an amenable number.

9312381 is a deficient number, since it is larger than the sum of its proper divisors (5915139).

9312381 is a wasteful number, since it uses less digits than its factorization.

9312381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 676 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 9312381 is about 3051.6194061514. The cubic root of 9312381 is about 210.3876513183.

The spelling of 9312381 in words is "nine million, three hundred twelve thousand, three hundred eighty-one".