8402331 has 16 divisors (see below), whose sum is σ = 13077504. Its totient is φ = 4698624.

The previous prime is 8402327. The next prime is 8402357. The reversal of 8402331 is 1332048.

It is a happy number.

It is not a de Polignac number, because 8402331 - 2² = 8402327 is a prime.

It is a super-2 number, since 2×8402331² = 141198332467122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 8402298 and 8402307.

It is not an unprimeable number, because it can be changed into a prime (8402311) 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, 3270 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (817344).

Almost surely, 2^8402331 is an apocalyptic number.

8402331 is a deficient number, since it is larger than the sum of its proper divisors (4675173).

8402331 is a wasteful number, since it uses less digits than its factorization.

8402331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 8402331 is about 2898.6774570483. The cubic root of 8402331 is about 203.2980729565.

Adding to 8402331 its reverse (1332048), we get a palindrome (9734379).

The spelling of 8402331 in words is "eight million, four hundred two thousand, three hundred thirty-one".