Search a number
425431 = 2353349
BaseRepresentation
bin1100111110111010111
3210121120201
41213313113
5102103211
613041331
73421216
oct1476727
9717521
10425431
112706a6
12186247
1311b846
14b107d
15860c1
hex67dd7

425431 has 8 divisors (see below), whose sum is σ = 453600. Its totient is φ = 398112.

The previous prime is 425423. The next prime is 425441. The reversal of 425431 is 134524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425431 - 23 = 425423 is a prime.

It is a super-2 number, since 2×4254312 = 361983071522, which contains 22 as substring.

It is a Duffinian number.

425431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 425399 and 425408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2425431 is an apocalyptic number.

425431 is the 349-th nonagonal number.

425431 is a deficient number, since it is larger than the sum of its proper divisors (28169).

425431 is a wasteful number, since it uses less digits than its factorization.

425431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 480, while the sum is 19.

The square root of 425431 is about 652.2507186658. The cubic root of 425431 is about 75.2101366108.

Adding to 425431 its reverse (134524), we get a palindrome (559955).

The spelling of 425431 in words is "four hundred twenty-five thousand, four hundred thirty-one".

Divisors: 1 23 53 349 1219 8027 18497 425431