31212323230 has 64 divisors (see below), whose sum is σ = 62359580160. Its totient is φ = 11152195200.

The previous prime is 31212323173. The next prime is 31212323237. The reversal of 31212323230 is 3232321213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212323237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8768191 + ... + 8771749.

It is an arithmetic number, because the mean of its divisors is an integer number (974368440).

Almost surely, 2^31212323230 is an apocalyptic number.

31212323230 is a deficient number, since it is larger than the sum of its proper divisors (31147256930).

31212323230 is a wasteful number, since it uses less digits than its factorization.

31212323230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31212323230 its reverse (3232321213), we get a palindrome (34444644443).

The spelling of 31212323230 in words is "thirty-one billion, two hundred twelve million, three hundred twenty-three thousand, two hundred thirty".