325405431 has 48 divisors (see below), whose sum is σ = 528353280. Its totient is φ = 198948960.

The previous prime is 325405427. The next prime is 325405459. The reversal of 325405431 is 134504523.

It is not a de Polignac number, because 325405431 - 2² = 325405427 is a prime.

It is a super-2 number, since 2×325405431² = 211777389048591522, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 325405395 and 325405404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325405411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 754786 + ... + 755216.

It is an arithmetic number, because the mean of its divisors is an integer number (11007360).

Almost surely, 2^325405431 is an apocalyptic number.

325405431 is a deficient number, since it is larger than the sum of its proper divisors (202947849).

325405431 is a wasteful number, since it uses less digits than its factorization.

325405431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 325405431 is about 18038.9975054048. The cubic root of 325405431 is about 687.8202098883.

Adding to 325405431 its reverse (134504523), we get a palindrome (459909954).

The spelling of 325405431 in words is "three hundred twenty-five million, four hundred five thousand, four hundred thirty-one".