1631325000 has 96 divisors (see below), whose sum is σ = 5097798720. Its totient is φ = 435000000.

The previous prime is 1631324993. The next prime is 1631325037. The reversal of 1631325000 is 5231361.

It is a super-2 number, since 2×1631325000² = 5322442511250000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64125 + ... + 85875.

It is an arithmetic number, because the mean of its divisors is an integer number (53102070).

Almost surely, 2^1631325000 is an apocalyptic number.

1631325000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1631325000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2548899360).

1631325000 is an abundant number, since it is smaller than the sum of its proper divisors (3466473720).

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

1631325000 is an equidigital number, since it uses as much as digits as its factorization.

1631325000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21785 (or 21761 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1631325000 is about 40389.6645195278. The cubic root of 1631325000 is about 1177.1907220964.

Adding to 1631325000 its reverse (5231361), we get a palindrome (1636556361).

The spelling of 1631325000 in words is "one billion, six hundred thirty-one million, three hundred twenty-five thousand".