31130120230 has 16 divisors (see below), whose sum is σ = 61128236304. Its totient is φ = 11320043680.

The previous prime is 31130120213. The next prime is 31130120243. The reversal of 31130120230 is 3202103113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141500437 + ... + 141500656.

It is an arithmetic number, because the mean of its divisors is an integer number (3820514769).

Almost surely, 2^31130120230 is an apocalyptic number.

31130120230 is a deficient number, since it is larger than the sum of its proper divisors (29998116074).

31130120230 is a wasteful number, since it uses less digits than its factorization.

31130120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283001111.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31130120230 its reverse (3202103113), we get a palindrome (34332223343).

The spelling of 31130120230 in words is "thirty-one billion, one hundred thirty million, one hundred twenty thousand, two hundred thirty".