1231323330 has 32 divisors (see below), whose sum is σ = 2963433600. Its totient is φ = 327435392.

The previous prime is 1231323319. The next prime is 1231323341. The reversal of 1231323330 is 333231321.

It is an interprime number because it is at equal distance from previous prime (1231323319) and next prime (1231323341).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231323297 and 1231323306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46395 + ... + 67934.

It is an arithmetic number, because the mean of its divisors is an integer number (92607300).

Almost surely, 2^1231323330 is an apocalyptic number.

1231323330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231323330 is an abundant number, since it is smaller than the sum of its proper divisors (1732110270).

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

1231323330 is a wasteful number, since it uses less digits than its factorization.

1231323330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114698.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1231323330 is about 35090.2170127231. The cubic root of 1231323330 is about 1071.8253786864.

Adding to 1231323330 its reverse (333231321), we get a palindrome (1564554651).

The spelling of 1231323330 in words is "one billion, two hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty".