1230020213 has 4 divisors (see below), whose sum is σ = 1260020748. Its totient is φ = 1200019680.

The previous prime is 1230020191. The next prime is 1230020249. The reversal of 1230020213 is 3120200321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224940004 + 1005080209 = 14998^2 + 31703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230020213 - 2⁸ = 1230019957 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 (1230020713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15000206 + ... + 15000287.

It is an arithmetic number, because the mean of its divisors is an integer number (315005187).

Almost surely, 2^1230020213 is an apocalyptic number.

It is an amenable number.

1230020213 is a deficient number, since it is larger than the sum of its proper divisors (30000535).

1230020213 is an equidigital number, since it uses as much as digits as its factorization.

1230020213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000534.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1230020213 is about 35071.6440019569. The cubic root of 1230020213 is about 1071.4471387758.

Adding to 1230020213 its reverse (3120200321), we get a palindrome (4350220534).

The spelling of 1230020213 in words is "one billion, two hundred thirty million, twenty thousand, two hundred thirteen".