231145151 has 2 divisors, whose sum is σ = 231145152. Its totient is φ = 231145150.

The previous prime is 231145111. The next prime is 231145157. The reversal of 231145151 is 151541132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231145151 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231145157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115572575 + 115572576.

It is an arithmetic number, because the mean of its divisors is an integer number (115572576).

Almost surely, 2^231145151 is an apocalyptic number.

231145151 is a deficient number, since it is larger than the sum of its proper divisors (1).

231145151 is an equidigital number, since it uses as much as digits as its factorization.

231145151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 231145151 is about 15203.4585210076. The cubic root of 231145151 is about 613.7077331337.

Adding to 231145151 its reverse (151541132), we get a palindrome (382686283).

The spelling of 231145151 in words is "two hundred thirty-one million, one hundred forty-five thousand, one hundred fifty-one".