1231330213 has 8 divisors (see below), whose sum is σ = 1315948032. Its totient is φ = 1148066496.

The previous prime is 1231330187. The next prime is 1231330267. The reversal of 1231330213 is 3120331321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231330213 - 2¹³ = 1231322021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231330273) 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, 336645 + ... + 340282.

It is an arithmetic number, because the mean of its divisors is an integer number (164493504).

Almost surely, 2^1231330213 is an apocalyptic number.

It is an amenable number.

1231330213 is a deficient number, since it is larger than the sum of its proper divisors (84617819).

1231330213 is a wasteful number, since it uses less digits than its factorization.

1231330213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677051.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1231330213 is about 35090.3150883545. The cubic root of 1231330213 is about 1071.8273758224.

Adding to 1231330213 its reverse (3120331321), we get a palindrome (4351661534).

The spelling of 1231330213 in words is "one billion, two hundred thirty-one million, three hundred thirty thousand, two hundred thirteen".