31300070293 has 2 divisors, whose sum is σ = 31300070294. Its totient is φ = 31300070292.

The previous prime is 31300070281. The next prime is 31300070311. The reversal of 31300070293 is 39207000313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26883537444 + 4416532849 = 163962^2 + 66457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31300070293 is a prime.

It is a super-2 number, since 2×31300070293² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31300073293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650035146 + 15650035147.

It is an arithmetic number, because the mean of its divisors is an integer number (15650035147).

Almost surely, 2^31300070293 is an apocalyptic number.

It is an amenable number.

31300070293 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300070293 is an equidigital number, since it uses as much as digits as its factorization.

31300070293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The spelling of 31300070293 in words is "thirty-one billion, three hundred million, seventy thousand, two hundred ninety-three".