131206741 has 2 divisors, whose sum is σ = 131206742. Its totient is φ = 131206740.

The previous prime is 131206739. The next prime is 131206771. The reversal of 131206741 is 147602131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 10536516 = 10985^2 + 3246^2 .

It is a cyclic number.

It is not a de Polignac number, because 131206741 - 2¹ = 131206739 is a prime.

Together with 131206739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131206711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65603370 + 65603371.

It is an arithmetic number, because the mean of its divisors is an integer number (65603371).

Almost surely, 2^131206741 is an apocalyptic number.

It is an amenable number.

131206741 is a deficient number, since it is larger than the sum of its proper divisors (1).

131206741 is an equidigital number, since it uses as much as digits as its factorization.

131206741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 131206741 is about 11454.5511042555. The cubic root of 131206741 is about 508.1423395231.

Adding to 131206741 its reverse (147602131), we get a palindrome (278808872).

The spelling of 131206741 in words is "one hundred thirty-one million, two hundred six thousand, seven hundred forty-one".