1231310330 has 8 divisors (see below), whose sum is σ = 2216358612. Its totient is φ = 492524128.

The previous prime is 1231310317. The next prime is 1231310393. The reversal of 1231310330 is 330131321.

It can be written as a sum of positive squares in 2 ways, for example, as 1220174761 + 11135569 = 34931^2 + 3337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1231310330² = 3032250257529417800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231310299 and 1231310308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61565507 + ... + 61565526.

Almost surely, 2^1231310330 is an apocalyptic number.

1231310330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231310330 is a deficient number, since it is larger than the sum of its proper divisors (985048282).

1231310330 is a wasteful number, since it uses less digits than its factorization.

1231310330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123131040.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1231310330 is about 35090.0317754202. The cubic root of 1231310330 is about 1071.8216066528.

Adding to 1231310330 its reverse (330131321), we get a palindrome (1561441651).

The spelling of 1231310330 in words is "one billion, two hundred thirty-one million, three hundred ten thousand, three hundred thirty".