151111223 has 2 divisors, whose sum is σ = 151111224. Its totient is φ = 151111222.

The previous prime is 151111201. The next prime is 151111271. The reversal of 151111223 is 322111151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151111223 - 2¹⁰ = 151110199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151111273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75555611 + 75555612.

It is an arithmetic number, because the mean of its divisors is an integer number (75555612).

Almost surely, 2^151111223 is an apocalyptic number.

151111223 is a deficient number, since it is larger than the sum of its proper divisors (1).

151111223 is an equidigital number, since it uses as much as digits as its factorization.

151111223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 17.

The square root of 151111223 is about 12292.7304940766. The cubic root of 151111223 is about 532.6381141593.

Adding to 151111223 its reverse (322111151), we get a palindrome (473222374).

The spelling of 151111223 in words is "one hundred fifty-one million, one hundred eleven thousand, two hundred twenty-three".