131236747 has 2 divisors, whose sum is σ = 131236748. Its totient is φ = 131236746.

The previous prime is 131236739. The next prime is 131236757. The reversal of 131236747 is 747632131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131236747 - 2³ = 131236739 is a prime.

It is not a weakly prime, because it can be changed into another prime (131236727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65618373 + 65618374.

It is an arithmetic number, because the mean of its divisors is an integer number (65618374).

Almost surely, 2^131236747 is an apocalyptic number.

131236747 is a deficient number, since it is larger than the sum of its proper divisors (1).

131236747 is an equidigital number, since it uses as much as digits as its factorization.

131236747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 131236747 is about 11455.8608144478. The cubic root of 131236747 is about 508.1810726876.

Adding to 131236747 its reverse (747632131), we get a palindrome (878868878).

The spelling of 131236747 in words is "one hundred thirty-one million, two hundred thirty-six thousand, seven hundred forty-seven".