231205411 has 2 divisors, whose sum is σ = 231205412. Its totient is φ = 231205410.

The previous prime is 231205399. The next prime is 231205441. The reversal of 231205411 is 114502132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231205411 - 2⁵ = 231205379 is a prime.

It is not a weakly prime, because it can be changed into another prime (231205441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115602705 + 115602706.

It is an arithmetic number, because the mean of its divisors is an integer number (115602706).

Almost surely, 2^231205411 is an apocalyptic number.

231205411 is a deficient number, since it is larger than the sum of its proper divisors (1).

231205411 is an equidigital number, since it uses as much as digits as its factorization.

231205411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 231205411 is about 15205.4401777785. The cubic root of 231205411 is about 613.7610601082.

Adding to 231205411 its reverse (114502132), we get a palindrome (345707543).

The spelling of 231205411 in words is "two hundred thirty-one million, two hundred five thousand, four hundred eleven".