126631003 has 2 divisors, whose sum is σ = 126631004. Its totient is φ = 126631002.

The previous prime is 126630997. The next prime is 126631013. The reversal of 126631003 is 300136621.

It is a weak prime.

It is an emirp because it is prime and its reverse (300136621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126631003 is a prime.

It is not a weakly prime, because it can be changed into another prime (126631013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63315501 + 63315502.

It is an arithmetic number, because the mean of its divisors is an integer number (63315502).

Almost surely, 2^126631003 is an apocalyptic number.

126631003 is a deficient number, since it is larger than the sum of its proper divisors (1).

126631003 is an equidigital number, since it uses as much as digits as its factorization.

126631003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 126631003 is about 11253.0441659135. The cubic root of 126631003 is about 502.1652802538.

Adding to 126631003 its reverse (300136621), we get a palindrome (426767624).

The spelling of 126631003 in words is "one hundred twenty-six million, six hundred thirty-one thousand, three".