126280031 has 2 divisors, whose sum is σ = 126280032. Its totient is φ = 126280030.

The previous prime is 126280003. The next prime is 126280039. The reversal of 126280031 is 130082621.

It is a strong prime.

It is an emirp because it is prime and its reverse (130082621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126280031 - 2²² = 122085727 is a prime.

It is a super-2 number, since 2×126280031² = 31893292458721922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126279979 and 126280006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126280039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63140015 + 63140016.

It is an arithmetic number, because the mean of its divisors is an integer number (63140016).

Almost surely, 2^126280031 is an apocalyptic number.

126280031 is a deficient number, since it is larger than the sum of its proper divisors (1).

126280031 is an equidigital number, since it uses as much as digits as its factorization.

126280031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 126280031 is about 11237.4388096221. The cubic root of 126280031 is about 501.7009152136.

The spelling of 126280031 in words is "one hundred twenty-six million, two hundred eighty thousand, thirty-one".