126031613 has 2 divisors, whose sum is σ = 126031614. Its totient is φ = 126031612.

The previous prime is 126031561. The next prime is 126031627. The reversal of 126031613 is 316130621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117983044 + 8048569 = 10862^2 + 2837^2 .

It is an emirp because it is prime and its reverse (316130621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126031613 - 2¹⁶ = 125966077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126031813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63015806 + 63015807.

It is an arithmetic number, because the mean of its divisors is an integer number (63015807).

Almost surely, 2^126031613 is an apocalyptic number.

It is an amenable number.

126031613 is a deficient number, since it is larger than the sum of its proper divisors (1).

126031613 is an equidigital number, since it uses as much as digits as its factorization.

126031613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 126031613 is about 11226.3802269476. The cubic root of 126031613 is about 501.3717173417.

The spelling of 126031613 in words is "one hundred twenty-six million, thirty-one thousand, six hundred thirteen".