331205130 has 96 divisors (see below), whose sum is σ = 896313600. Its totient is φ = 84779136.

The previous prime is 331205117. The next prime is 331205183. The reversal of 331205130 is 31502133.

331205130 is a `hidden beast` number, since 33 + 120 + 513 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262441 + ... + 263699.

It is an arithmetic number, because the mean of its divisors is an integer number (9336600).

Almost surely, 2^331205130 is an apocalyptic number.

331205130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 331205130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448156800).

331205130 is an abundant number, since it is smaller than the sum of its proper divisors (565108470).

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

331205130 is a wasteful number, since it uses less digits than its factorization.

331205130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 331205130 is about 18199.0420077541. The cubic root of 331205130 is about 691.8825089825.

Adding to 331205130 its reverse (31502133), we get a palindrome (362707263).

The spelling of 331205130 in words is "three hundred thirty-one million, two hundred five thousand, one hundred thirty".