1231333130 has 8 divisors (see below), whose sum is σ = 2216399652. Its totient is φ = 492533248.

The previous prime is 1231333111. The next prime is 1231333139. The reversal of 1231333130 is 313331321.

It can be written as a sum of positive squares in 2 ways, for example, as 1030345801 + 200987329 = 32099^2 + 14177^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1231333139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61566647 + ... + 61566666.

Almost surely, 2^1231333130 is an apocalyptic number.

1231333130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231333130 is a deficient number, since it is larger than the sum of its proper divisors (985066522).

1231333130 is a wasteful number, since it uses less digits than its factorization.

1231333130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123133320.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1231333130 is about 35090.3566525050. The cubic root of 1231333130 is about 1071.8282222019.

Adding to 1231333130 its reverse (313331321), we get a palindrome (1544664451).

The spelling of 1231333130 in words is "one billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred thirty".