1213862773831 has 2 divisors, whose sum is σ = 1213862773832. Its totient is φ = 1213862773830.

The previous prime is 1213862773789. The next prime is 1213862773859. The reversal of 1213862773831 is 1383772683121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213862773831 - 2¹¹ = 1213862771783 is a prime.

It is a super-2 number, since 2×1213862773831² (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 (1213862773531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606931386915 + 606931386916.

It is an arithmetic number, because the mean of its divisors is an integer number (606931386916).

Almost surely, 2^{1213862773831} is an apocalyptic number.

1213862773831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213862773831 is an equidigital number, since it uses as much as digits as its factorization.

1213862773831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The spelling of 1213862773831 in words is "one trillion, two hundred thirteen billion, eight hundred sixty-two million, seven hundred seventy-three thousand, eight hundred thirty-one".