20031230353 has 2 divisors, whose sum is σ = 20031230354. Its totient is φ = 20031230352.

The previous prime is 20031230299. The next prime is 20031230363. The reversal of 20031230353 is 35303213002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18339388929 + 1691841424 = 135423^2 + 41132^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031230353 - 2¹³ = 20031222161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20031230363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015615176 + 10015615177.

It is an arithmetic number, because the mean of its divisors is an integer number (10015615177).

Almost surely, 2^20031230353 is an apocalyptic number.

It is an amenable number.

20031230353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031230353 is an equidigital number, since it uses as much as digits as its factorization.

20031230353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 22.

Adding to 20031230353 its reverse (35303213002), we get a palindrome (55334443355).

The spelling of 20031230353 in words is "twenty billion, thirty-one million, two hundred thirty thousand, three hundred fifty-three".