231312421210 has 16 divisors (see below), whose sum is σ = 448390232136. Its totient is φ = 85407663168.

The previous prime is 231312421141. The next prime is 231312421213. The reversal of 231312421210 is 12124213132.

It can be written as a sum of positive squares in 4 ways, for example, as 58330461289 + 172981959921 = 241517^2 + 415911^2 .

It is not an unprimeable number, because it can be changed into a prime (231312421213) 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, 889663029 + ... + 889663288.

Almost surely, 2^231312421210 is an apocalyptic number.

231312421210 is a deficient number, since it is larger than the sum of its proper divisors (217077810926).

231312421210 is a wasteful number, since it uses less digits than its factorization.

231312421210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779326337.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 231312421210 its reverse (12124213132), we get a palindrome (243436634342).

The spelling of 231312421210 in words is "two hundred thirty-one billion, three hundred twelve million, four hundred twenty-one thousand, two hundred ten".