123132311 has 2 divisors, whose sum is σ = 123132312. Its totient is φ = 123132310.

The previous prime is 123132257. The next prime is 123132353. The reversal of 123132311 is 113231321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123132311 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123132311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123132011) 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, 61566155 + 61566156.

It is an arithmetic number, because the mean of its divisors is an integer number (61566156).

Almost surely, 2^123132311 is an apocalyptic number.

123132311 is a deficient number, since it is larger than the sum of its proper divisors (1).

123132311 is an equidigital number, since it uses as much as digits as its factorization.

123132311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 123132311 is about 11096.4999436759. The cubic root of 123132311 is about 497.4972413002.

Adding to 123132311 its reverse (113231321), we get a palindrome (236363632).

The spelling of 123132311 in words is "one hundred twenty-three million, one hundred thirty-two thousand, three hundred eleven".