131237111 has 2 divisors, whose sum is σ = 131237112. Its totient is φ = 131237110.

The previous prime is 131237089. The next prime is 131237131. The reversal of 131237111 is 111732131.

It is an a-pointer prime, because the next prime (131237131) can be obtained adding 131237111 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131237111 - 2¹⁰ = 131236087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131237131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65618555 + 65618556.

It is an arithmetic number, because the mean of its divisors is an integer number (65618556).

Almost surely, 2^131237111 is an apocalyptic number.

131237111 is a deficient number, since it is larger than the sum of its proper divisors (1).

131237111 is an equidigital number, since it uses as much as digits as its factorization.

131237111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126, while the sum is 20.

The square root of 131237111 is about 11455.8767015013. The cubic root of 131237111 is about 508.1815425198.

Adding to 131237111 its reverse (111732131), we get a palindrome (242969242).

The spelling of 131237111 in words is "one hundred thirty-one million, two hundred thirty-seven thousand, one hundred eleven".