154222331 has 2 divisors, whose sum is σ = 154222332. Its totient is φ = 154222330.

The previous prime is 154222309. The next prime is 154222333. The reversal of 154222331 is 133222451.

It is a strong prime.

It is an emirp because it is prime and its reverse (133222451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154222331 - 2⁶ = 154222267 is a prime.

It is a super-2 number, since 2×154222331² = 47569054758147122, which contains 22 as substring.

Together with 154222333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 154222297 and 154222306.

It is not a weakly prime, because it can be changed into another prime (154222333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77111165 + 77111166.

It is an arithmetic number, because the mean of its divisors is an integer number (77111166).

Almost surely, 2^154222331 is an apocalyptic number.

154222331 is a deficient number, since it is larger than the sum of its proper divisors (1).

154222331 is an equidigital number, since it uses as much as digits as its factorization.

154222331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 154222331 is about 12418.6283864201. The cubic root of 154222331 is about 536.2686647383.

Adding to 154222331 its reverse (133222451), we get a palindrome (287444782).

The spelling of 154222331 in words is "one hundred fifty-four million, two hundred twenty-two thousand, three hundred thirty-one".