8425431 has 16 divisors (see below), whose sum is σ = 14265600. Its totient is φ = 4814424.

The previous prime is 8425427. The next prime is 8425433. The reversal of 8425431 is 1345248.

8425431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8425431 - 2² = 8425427 is a prime.

It is a super-2 number, since 2×8425431² = 141975775071522, which contains 22 as substring.

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

8425431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8425395 and 8425404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425433) 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, 22101 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (891600).

Almost surely, 2^8425431 is an apocalyptic number.

8425431 is a deficient number, since it is larger than the sum of its proper divisors (5840169).

8425431 is a wasteful number, since it uses less digits than its factorization.

8425431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44595 (or 44589 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 8425431 is about 2902.6592979542. The cubic root of 8425431 is about 203.4842073520.

The spelling of 8425431 in words is "eight million, four hundred twenty-five thousand, four hundred thirty-one".