31021301312293 has 2 divisors, whose sum is σ = 31021301312294. Its totient is φ = 31021301312292.

The previous prime is 31021301312269. The next prime is 31021301312399. The reversal of 31021301312293 is 39221310312013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27499347216324 + 3521954095969 = 5243982^2 + 1876687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31021301312293 is a prime.

It is a super-2 number, since 2×31021301312293² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31021301312233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510650656146 + 15510650656147.

It is an arithmetic number, because the mean of its divisors is an integer number (15510650656147).

Almost surely, 2^{31021301312293} is an apocalyptic number.

It is an amenable number.

31021301312293 is a deficient number, since it is larger than the sum of its proper divisors (1).

31021301312293 is an equidigital number, since it uses as much as digits as its factorization.

31021301312293 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.

The spelling of 31021301312293 in words is "thirty-one trillion, twenty-one billion, three hundred one million, three hundred twelve thousand, two hundred ninety-three".