31404443093 has 2 divisors, whose sum is σ = 31404443094. Its totient is φ = 31404443092.

The previous prime is 31404443089. The next prime is 31404443159. The reversal of 31404443093 is 39034440413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20248436209 + 11156006884 = 142297^2 + 105622^2 .

It is a cyclic number.

It is not a de Polignac number, because 31404443093 - 2² = 31404443089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31404443023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702221546 + 15702221547.

It is an arithmetic number, because the mean of its divisors is an integer number (15702221547).

Almost surely, 2^31404443093 is an apocalyptic number.

It is an amenable number.

31404443093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404443093 is an equidigital number, since it uses as much as digits as its factorization.

31404443093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 31404443093 in words is "thirty-one billion, four hundred four million, four hundred forty-three thousand, ninety-three".