391023325 has 48 divisors (see below), whose sum is σ = 636387840. Its totient is φ = 230904000.

The previous prime is 391023313. The next prime is 391023331. The reversal of 391023325 is 523320193.

It is not a de Polignac number, because 391023325 - 2⁵ = 391023293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 391023293 and 391023302.

It is a congruent number.

It is an unprimeable number.

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, 31230 + ... + 41920.

It is an arithmetic number, because the mean of its divisors is an integer number (13258080).

Almost surely, 2^391023325 is an apocalyptic number.

391023325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

391023325 is a deficient number, since it is larger than the sum of its proper divisors (245364515).

391023325 is a wasteful number, since it uses less digits than its factorization.

391023325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738 (or 10733 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 391023325 is about 19774.3097224657. The cubic root of 391023325 is about 731.2528214760.

The spelling of 391023325 in words is "three hundred ninety-one million, twenty-three thousand, three hundred twenty-five".