1290882981631 has 2 divisors, whose sum is σ = 1290882981632. Its totient is φ = 1290882981630.

The previous prime is 1290882981623. The next prime is 1290882981643. The reversal of 1290882981631 is 1361892880921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1290882981631 - 2³ = 1290882981623 is a prime.

It is a super-2 number, since 2×1290882981631² (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 (1290882981601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645441490815 + 645441490816.

It is an arithmetic number, because the mean of its divisors is an integer number (645441490816).

Almost surely, 2^{1290882981631} is an apocalyptic number.

1290882981631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290882981631 is an equidigital number, since it uses as much as digits as its factorization.

1290882981631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 1290882981631 in words is "one trillion, two hundred ninety billion, eight hundred eighty-two million, nine hundred eighty-one thousand, six hundred thirty-one".