31404600317 has 2 divisors, whose sum is σ = 31404600318. Its totient is φ = 31404600316.

The previous prime is 31404600287. The next prime is 31404600323. The reversal of 31404600317 is 71300640413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18782976601 + 12621623716 = 137051^2 + 112346^2 .

It is an emirp because it is prime and its reverse (71300640413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31404600317 - 2²⁰ = 31403551741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31404600317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31401600317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702300158 + 15702300159.

It is an arithmetic number, because the mean of its divisors is an integer number (15702300159).

Almost surely, 2^31404600317 is an apocalyptic number.

It is an amenable number.

31404600317 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404600317 is an equidigital number, since it uses as much as digits as its factorization.

31404600317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 31404600317 in words is "thirty-one billion, four hundred four million, six hundred thousand, three hundred seventeen".