123411131 has 2 divisors, whose sum is σ = 123411132. Its totient is φ = 123411130.

The previous prime is 123411121. The next prime is 123411133. The reversal of 123411131 is 131114321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123411131 - 2²² = 119216827 is a prime.

It is a super-2 number, since 2×123411131² = 30460614509398322, which contains 22 as substring.

Together with 123411133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123411133) 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, 61705565 + 61705566.

It is an arithmetic number, because the mean of its divisors is an integer number (61705566).

Almost surely, 2^123411131 is an apocalyptic number.

123411131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123411131 is an equidigital number, since it uses as much as digits as its factorization.

123411131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 123411131 is about 11109.0562605471. The cubic root of 123411131 is about 497.8724680557.

Adding to 123411131 its reverse (131114321), we get a palindrome (254525452).

It can be divided in two parts, 12 and 3411131, that added together give a palindrome (3411143).

The spelling of 123411131 in words is "one hundred twenty-three million, four hundred eleven thousand, one hundred thirty-one".