331002130 has 16 divisors (see below), whose sum is σ = 598365144. Its totient is φ = 131831680.

The previous prime is 331002109. The next prime is 331002137. The reversal of 331002130 is 31200133.

It can be written as a sum of positive squares in 4 ways, for example, as 259886641 + 71115489 = 16121^2 + 8433^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 331002130.

It is not an unprimeable number, because it can be changed into a prime (331002137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68701 + ... + 73360.

Almost surely, 2^331002130 is an apocalyptic number.

331002130 is a deficient number, since it is larger than the sum of its proper divisors (267363014).

331002130 is a wasteful number, since it uses less digits than its factorization.

331002130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142301.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 331002130 is about 18193.4639362602. The cubic root of 331002130 is about 691.7411254497.

Adding to 331002130 its reverse (31200133), we get a palindrome (362202263).

The spelling of 331002130 in words is "three hundred thirty-one million, two thousand, one hundred thirty".