1031313232291 has 2 divisors, whose sum is σ = 1031313232292. Its totient is φ = 1031313232290.

The previous prime is 1031313232171. The next prime is 1031313232309. The reversal of 1031313232291 is 1922323131301.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031313232291 - 2¹³ = 1031313224099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031313232591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515656616145 + 515656616146.

It is an arithmetic number, because the mean of its divisors is an integer number (515656616146).

Almost surely, 2^{1031313232291} is an apocalyptic number.

1031313232291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031313232291 is an equidigital number, since it uses as much as digits as its factorization.

1031313232291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

Adding to 1031313232291 its reverse (1922323131301), we get a palindrome (2953636363592).

The spelling of 1031313232291 in words is "one trillion, thirty-one billion, three hundred thirteen million, two hundred thirty-two thousand, two hundred ninety-one".