12310221231 has 24 divisors (see below), whose sum is σ = 22169057664. Its totient is φ = 6394919760.

The previous prime is 12310221229. The next prime is 12310221263. The reversal of 12310221231 is 13212201321.

It is not a de Polignac number, because 12310221231 - 2¹ = 12310221229 is a prime.

It is a super-2 number, since 2×12310221231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310221221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8881141 + ... + 8882526.

It is an arithmetic number, because the mean of its divisors is an integer number (923710736).

Almost surely, 2^12310221231 is an apocalyptic number.

12310221231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12310221231 is a deficient number, since it is larger than the sum of its proper divisors (9858836433).

12310221231 is a wasteful number, since it uses less digits than its factorization.

12310221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17763691 (or 17763688 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12310221231 its reverse (13212201321), we get a palindrome (25522422552).

The spelling of 12310221231 in words is "twelve billion, three hundred ten million, two hundred twenty-one thousand, two hundred thirty-one".