1301312231291 has 2 divisors, whose sum is σ = 1301312231292. Its totient is φ = 1301312231290.

The previous prime is 1301312231281. The next prime is 1301312231309. The reversal of 1301312231291 is 1921322131031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1301312231291 - 2³⁸ = 1026434324347 is a prime.

It is a super-2 number, since 2×1301312231291² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1301312231201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650656115645 + 650656115646.

It is an arithmetic number, because the mean of its divisors is an integer number (650656115646).

Almost surely, 2^{1301312231291} is an apocalyptic number.

1301312231291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301312231291 is an equidigital number, since it uses as much as digits as its factorization.

1301312231291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1301312231291 in words is "one trillion, three hundred one billion, three hundred twelve million, two hundred thirty-one thousand, two hundred ninety-one".