126731611 has 2 divisors, whose sum is σ = 126731612. Its totient is φ = 126731610.

The previous prime is 126731609. The next prime is 126731677. The reversal of 126731611 is 116137621.

It is a weak prime.

It is an emirp because it is prime and its reverse (116137621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126731611 - 2¹ = 126731609 is a prime.

Together with 126731609, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 126731611.

It is not a weakly prime, because it can be changed into another prime (126741611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63365805 + 63365806.

It is an arithmetic number, because the mean of its divisors is an integer number (63365806).

Almost surely, 2^126731611 is an apocalyptic number.

126731611 is a deficient number, since it is larger than the sum of its proper divisors (1).

126731611 is an equidigital number, since it uses as much as digits as its factorization.

126731611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 126731611 is about 11257.5135354127. The cubic root of 126731611 is about 502.2982347157.

The spelling of 126731611 in words is "one hundred twenty-six million, seven hundred thirty-one thousand, six hundred eleven".