231312210229 has 2 divisors, whose sum is σ = 231312210230. Its totient is φ = 231312210228.

The previous prime is 231312210167. The next prime is 231312210257. The reversal of 231312210229 is 922012213132.

It is an a-pointer prime, because the next prime (231312210257) can be obtained adding 231312210229 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188794595025 + 42517615204 = 434505^2 + 206198^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312210229 - 2¹⁵ = 231312177461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231312210197 and 231312210206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231312910229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656105114 + 115656105115.

It is an arithmetic number, because the mean of its divisors is an integer number (115656105115).

Almost surely, 2^231312210229 is an apocalyptic number.

It is an amenable number.

231312210229 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312210229 is an equidigital number, since it uses as much as digits as its factorization.

231312210229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 231312210229 in words is "two hundred thirty-one billion, three hundred twelve million, two hundred ten thousand, two hundred twenty-nine".