311523103 has 2 divisors, whose sum is σ = 311523104. Its totient is φ = 311523102.

The previous prime is 311523083. The next prime is 311523119. The reversal of 311523103 is 301325113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311523103 - 2⁵ = 311523071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311523203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155761551 + 155761552.

It is an arithmetic number, because the mean of its divisors is an integer number (155761552).

Almost surely, 2^311523103 is an apocalyptic number.

311523103 is a deficient number, since it is larger than the sum of its proper divisors (1).

311523103 is an equidigital number, since it uses as much as digits as its factorization.

311523103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 311523103 is about 17650.0170821447. The cubic root of 311523103 is about 677.8965443153.

Adding to 311523103 its reverse (301325113), we get a palindrome (612848216).

The spelling of 311523103 in words is "three hundred eleven million, five hundred twenty-three thousand, one hundred three".