325420631 has 2 divisors, whose sum is σ = 325420632. Its totient is φ = 325420630.

The previous prime is 325420607. The next prime is 325420633. The reversal of 325420631 is 136024523.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325420631 is a prime.

It is a super-2 number, since 2×325420631² = 211797174160876322, which contains 22 as substring.

Together with 325420633, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325420631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325420633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162710315 + 162710316.

It is an arithmetic number, because the mean of its divisors is an integer number (162710316).

Almost surely, 2^325420631 is an apocalyptic number.

325420631 is a deficient number, since it is larger than the sum of its proper divisors (1).

325420631 is an equidigital number, since it uses as much as digits as its factorization.

325420631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 325420631 is about 18039.4188099284. The cubic root of 325420631 is about 687.8309193023.

The spelling of 325420631 in words is "three hundred twenty-five million, four hundred twenty thousand, six hundred thirty-one".