1292831305391 has 2 divisors, whose sum is σ = 1292831305392. Its totient is φ = 1292831305390.

The previous prime is 1292831305387. The next prime is 1292831305463. The reversal of 1292831305391 is 1935031382921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1292831305391 - 2² = 1292831305387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1292831305351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646415652695 + 646415652696.

It is an arithmetic number, because the mean of its divisors is an integer number (646415652696).

Almost surely, 2^{1292831305391} is an apocalyptic number.

1292831305391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292831305391 is an equidigital number, since it uses as much as digits as its factorization.

1292831305391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 1292831305391 in words is "one trillion, two hundred ninety-two billion, eight hundred thirty-one million, three hundred five thousand, three hundred ninety-one".