31210212230 has 16 divisors (see below), whose sum is σ = 56231853264. Its totient is φ = 12472202400.

The previous prime is 31210212211. The next prime is 31210212233. The reversal of 31210212230 is 3221201213.

It is a junction number, because it is equal to n+sod(n) for n = 31210212199 and 31210212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210212233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1474277 + ... + 1495296.

It is an arithmetic number, because the mean of its divisors is an integer number (3514490829).

Almost surely, 2^31210212230 is an apocalyptic number.

31210212230 is a deficient number, since it is larger than the sum of its proper divisors (25021641034).

31210212230 is a wasteful number, since it uses less digits than its factorization.

31210212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970631.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31210212230 its reverse (3221201213), we get a palindrome (34431413443).

The spelling of 31210212230 in words is "thirty-one billion, two hundred ten million, two hundred twelve thousand, two hundred thirty".