1272191824831 has 2 divisors, whose sum is σ = 1272191824832. Its totient is φ = 1272191824830.

The previous prime is 1272191824819. The next prime is 1272191824847. The reversal of 1272191824831 is 1384281912721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272191824831 - 2²⁵ = 1272158270399 is a prime.

It is a super-2 number, since 2×1272191824831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272191824811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636095912415 + 636095912416.

It is an arithmetic number, because the mean of its divisors is an integer number (636095912416).

Almost surely, 2^{1272191824831} is an apocalyptic number.

1272191824831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272191824831 is an equidigital number, since it uses as much as digits as its factorization.

1272191824831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The spelling of 1272191824831 in words is "one trillion, two hundred seventy-two billion, one hundred ninety-one million, eight hundred twenty-four thousand, eight hundred thirty-one".