33231938693 has 2 divisors, whose sum is σ = 33231938694. Its totient is φ = 33231938692.

The previous prime is 33231938659. The next prime is 33231938717. The reversal of 33231938693 is 39683913233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33001445569 + 230493124 = 181663^2 + 15182^2 .

It is a cyclic number.

It is not a de Polignac number, because 33231938693 - 2¹² = 33231934597 is a prime.

It is a super-2 number, since 2×33231938693² (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 (33231938633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16615969346 + 16615969347.

It is an arithmetic number, because the mean of its divisors is an integer number (16615969347).

Almost surely, 2^33231938693 is an apocalyptic number.

It is an amenable number.

33231938693 is a deficient number, since it is larger than the sum of its proper divisors (1).

33231938693 is an equidigital number, since it uses as much as digits as its factorization.

33231938693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 50.

The spelling of 33231938693 in words is "thirty-three billion, two hundred thirty-one million, nine hundred thirty-eight thousand, six hundred ninety-three".