31230210243 has 16 divisors (see below), whose sum is σ = 42475207680. Its totient is φ = 20406524736.

The previous prime is 31230210241. The next prime is 31230210289. The reversal of 31230210243 is 34201203213.

It is not a de Polignac number, because 31230210243 - 2¹ = 31230210241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31230210241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448455 + ... + 513392.

It is an arithmetic number, because the mean of its divisors is an integer number (2654700480).

Almost surely, 2^31230210243 is an apocalyptic number.

31230210243 is a deficient number, since it is larger than the sum of its proper divisors (11244997437).

31230210243 is a wasteful number, since it uses less digits than its factorization.

31230210243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962066.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31230210243 its reverse (34201203213), we get a palindrome (65431413456).

The spelling of 31230210243 in words is "thirty-one billion, two hundred thirty million, two hundred ten thousand, two hundred forty-three".