31404338269 has 2 divisors, whose sum is σ = 31404338270. Its totient is φ = 31404338268.

The previous prime is 31404338227. The next prime is 31404338281. The reversal of 31404338269 is 96283340413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20153493369 + 11250844900 = 141963^2 + 106070^2 .

It is a cyclic number.

It is not a de Polignac number, because 31404338269 - 2¹¹ = 31404336221 is a prime.

It is a super-2 number, since 2×31404338269² (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 (31404338369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702169134 + 15702169135.

It is an arithmetic number, because the mean of its divisors is an integer number (15702169135).

Almost surely, 2^31404338269 is an apocalyptic number.

It is an amenable number.

31404338269 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404338269 is an equidigital number, since it uses as much as digits as its factorization.

31404338269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 31404338269 in words is "thirty-one billion, four hundred four million, three hundred thirty-eight thousand, two hundred sixty-nine".