1305321135031 has 2 divisors, whose sum is σ = 1305321135032. Its totient is φ = 1305321135030.

The previous prime is 1305321135007. The next prime is 1305321135037. The reversal of 1305321135031 is 1305311235031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305321135031 - 2³³ = 1296731200439 is a prime.

It is a super-2 number, since 2×1305321135031² (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 (1305321135037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652660567515 + 652660567516.

It is an arithmetic number, because the mean of its divisors is an integer number (652660567516).

Almost surely, 2^{1305321135031} is an apocalyptic number.

1305321135031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305321135031 is an equidigital number, since it uses as much as digits as its factorization.

1305321135031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 28.

The spelling of 1305321135031 in words is "one trillion, three hundred five billion, three hundred twenty-one million, one hundred thirty-five thousand, thirty-one".