231420011 has 2 divisors, whose sum is σ = 231420012. Its totient is φ = 231420010.

The previous prime is 231419999. The next prime is 231420047. The reversal of 231420011 is 110024132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231420011 - 2¹⁰ = 231418987 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231420061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115710005 + 115710006.

It is an arithmetic number, because the mean of its divisors is an integer number (115710006).

Almost surely, 2^231420011 is an apocalyptic number.

231420011 is a deficient number, since it is larger than the sum of its proper divisors (1).

231420011 is an equidigital number, since it uses as much as digits as its factorization.

231420011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231420011 is about 15212.4952259647. The cubic root of 231420011 is about 613.9508947561.

Adding to 231420011 its reverse (110024132), we get a palindrome (341444143).

The spelling of 231420011 in words is "two hundred thirty-one million, four hundred twenty thousand, eleven".