325731630 has 64 divisors (see below), whose sum is σ = 940469760. Its totient is φ = 70533504.

The previous prime is 325731569. The next prime is 325731641. The reversal of 325731630 is 36137523.

It is a super-2 number, since 2×325731630² = 212202189564913800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36829 + ... + 44808.

It is an arithmetic number, because the mean of its divisors is an integer number (14694840).

Almost surely, 2^325731630 is an apocalyptic number.

325731630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

325731630 is an abundant number, since it is smaller than the sum of its proper divisors (614738130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325731630 is a wasteful number, since it uses less digits than its factorization.

325731630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81673.

The product of its (nonzero) digits is 11340, while the sum is 30.

The square root of 325731630 is about 18048.0367353350. The cubic root of 325731630 is about 688.0499656676.

The spelling of 325731630 in words is "three hundred twenty-five million, seven hundred thirty-one thousand, six hundred thirty".