31021033093 has 2 divisors, whose sum is σ = 31021033094. Its totient is φ = 31021033092.

The previous prime is 31021033091. The next prime is 31021033111. The reversal of 31021033093 is 39033012013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30875058369 + 145974724 = 175713^2 + 12082^2 .

It is a cyclic number.

It is not a de Polignac number, because 31021033093 - 2¹ = 31021033091 is a prime.

It is a super-2 number, since 2×31021033093² (a number of 22 digits) contains 22 as substring.

Together with 31021033091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31021033091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510516546 + 15510516547.

It is an arithmetic number, because the mean of its divisors is an integer number (15510516547).

Almost surely, 2^31021033093 is an apocalyptic number.

It is an amenable number.

31021033093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31021033093 is an equidigital number, since it uses as much as digits as its factorization.

31021033093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 25.

The spelling of 31021033093 in words is "thirty-one billion, twenty-one million, thirty-three thousand, ninety-three".