31203320230 has 32 divisors (see below), whose sum is σ = 57622523904. Its totient is φ = 12159170016.

The previous prime is 31203320219. The next prime is 31203320233. The reversal of 31203320230 is 3202330213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31203320198 and 31203320207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203320233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69957 + ... + 259423.

It is an arithmetic number, because the mean of its divisors is an integer number (1800703872).

Almost surely, 2^31203320230 is an apocalyptic number.

31203320230 is a deficient number, since it is larger than the sum of its proper divisors (26419203674).

31203320230 is a wasteful number, since it uses less digits than its factorization.

31203320230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189900.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 31203320230 its reverse (3202330213), we get a palindrome (34405650443).

The spelling of 31203320230 in words is "thirty-one billion, two hundred three million, three hundred twenty thousand, two hundred thirty".