131323111 has 2 divisors, whose sum is σ = 131323112. Its totient is φ = 131323110.

The previous prime is 131323103. The next prime is 131323141. The reversal of 131323111 is 111323131.

It is a weak prime.

It is an emirp because it is prime and its reverse (111323131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131323111 - 2³ = 131323103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131323141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661555 + 65661556.

It is an arithmetic number, because the mean of its divisors is an integer number (65661556).

Almost surely, 2^131323111 is an apocalyptic number.

131323111 is a deficient number, since it is larger than the sum of its proper divisors (1).

131323111 is an equidigital number, since it uses as much as digits as its factorization.

131323111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 16.

The square root of 131323111 is about 11459.6296187966. The cubic root of 131323111 is about 508.2925224843.

Adding to 131323111 its reverse (111323131), we get a palindrome (242646242).

The spelling of 131323111 in words is "one hundred thirty-one million, three hundred twenty-three thousand, one hundred eleven".