126730831 has 2 divisors, whose sum is σ = 126730832. Its totient is φ = 126730830.

The previous prime is 126730829. The next prime is 126730859. The reversal of 126730831 is 138037621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126730831 - 2¹ = 126730829 is a prime.

It is a super-2 number, since 2×126730831² = 32121407051901122, which contains 22 as substring.

Together with 126730829, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 126730793 and 126730802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126430831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63365415 + 63365416.

It is an arithmetic number, because the mean of its divisors is an integer number (63365416).

Almost surely, 2^126730831 is an apocalyptic number.

126730831 is a deficient number, since it is larger than the sum of its proper divisors (1).

126730831 is an equidigital number, since it uses as much as digits as its factorization.

126730831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 126730831 is about 11257.4788918301. The cubic root of 126730831 is about 502.2972042087.

The spelling of 126730831 in words is "one hundred twenty-six million, seven hundred thirty thousand, eight hundred thirty-one".