231301229171 has 2 divisors, whose sum is σ = 231301229172. Its totient is φ = 231301229170.

The previous prime is 231301229141. The next prime is 231301229249. The reversal of 231301229171 is 171922103132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231301229171 is a prime.

It is a super-2 number, since 2×231301229171² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231301229141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650614585 + 115650614586.

It is an arithmetic number, because the mean of its divisors is an integer number (115650614586).

Almost surely, 2^231301229171 is an apocalyptic number.

231301229171 is a deficient number, since it is larger than the sum of its proper divisors (1).

231301229171 is an equidigital number, since it uses as much as digits as its factorization.

231301229171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 231301229171 in words is "two hundred thirty-one billion, three hundred one million, two hundred twenty-nine thousand, one hundred seventy-one".