993234217631 has 2 divisors, whose sum is σ = 993234217632. Its totient is φ = 993234217630.

The previous prime is 993234217589. The next prime is 993234217639. The reversal of 993234217631 is 136712432399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993234217631 - 2¹⁰ = 993234216607 is a prime.

It is a super-2 number, since 2×993234217631² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993234217631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993234217639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496617108815 + 496617108816.

It is an arithmetic number, because the mean of its divisors is an integer number (496617108816).

Almost surely, 2^993234217631 is an apocalyptic number.

993234217631 is a deficient number, since it is larger than the sum of its proper divisors (1).

993234217631 is an equidigital number, since it uses as much as digits as its factorization.

993234217631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 50.

The spelling of 993234217631 in words is "nine hundred ninety-three billion, two hundred thirty-four million, two hundred seventeen thousand, six hundred thirty-one".