131111207 has 2 divisors, whose sum is σ = 131111208. Its totient is φ = 131111206.

The previous prime is 131111177. The next prime is 131111221. The reversal of 131111207 is 702111131.

It is a strong prime.

It is an emirp because it is prime and its reverse (702111131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131111207 - 2¹⁶ = 131045671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131111107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65555603 + 65555604.

It is an arithmetic number, because the mean of its divisors is an integer number (65555604).

Almost surely, 2^131111207 is an apocalyptic number.

131111207 is a deficient number, since it is larger than the sum of its proper divisors (1).

131111207 is an equidigital number, since it uses as much as digits as its factorization.

131111207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 131111207 is about 11450.3802120279. The cubic root of 131111207 is about 508.0189803705.

Adding to 131111207 its reverse (702111131), we get a palindrome (833222338).

The spelling of 131111207 in words is "one hundred thirty-one million, one hundred eleven thousand, two hundred seven".