168111331 has 2 divisors, whose sum is σ = 168111332. Its totient is φ = 168111330.

The previous prime is 168111287. The next prime is 168111353. The reversal of 168111331 is 133111861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168111331 - 2⁹ = 168110819 is a prime.

It is a super-2 number, since 2×168111331² = 56522839221183122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168111296 and 168111305.

It is not a weakly prime, because it can be changed into another prime (168112331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84055665 + 84055666.

It is an arithmetic number, because the mean of its divisors is an integer number (84055666).

Almost surely, 2^168111331 is an apocalyptic number.

168111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

168111331 is an equidigital number, since it uses as much as digits as its factorization.

168111331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 168111331 is about 12965.7753721095. The cubic root of 168111331 is about 551.9066947857.

The spelling of 168111331 in words is "one hundred sixty-eight million, one hundred eleven thousand, three hundred thirty-one".