126430831 has 2 divisors, whose sum is σ = 126430832. Its totient is φ = 126430830.

The previous prime is 126430783. The next prime is 126430849. The reversal of 126430831 is 138034621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126430831 is a prime.

It is a super-2 number, since 2×126430831² = 31969510054701122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126430831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126430531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63215415 + 63215416.

It is an arithmetic number, because the mean of its divisors is an integer number (63215416).

Almost surely, 2^126430831 is an apocalyptic number.

126430831 is a deficient number, since it is larger than the sum of its proper divisors (1).

126430831 is an equidigital number, since it uses as much as digits as its factorization.

126430831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 126430831 is about 11244.1465216352. The cubic root of 126430831 is about 501.9005413983.

The spelling of 126430831 in words is "one hundred twenty-six million, four hundred thirty thousand, eight hundred thirty-one".