31434343169 has 2 divisors, whose sum is σ = 31434343170. Its totient is φ = 31434343168.

The previous prime is 31434343123. The next prime is 31434343219. The reversal of 31434343169 is 96134343413.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22722547600 + 8711795569 = 150740^2 + 93337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434343169 is a prime.

It is a super-2 number, since 2×31434343169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31434343469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717171584 + 15717171585.

It is an arithmetic number, because the mean of its divisors is an integer number (15717171585).

Almost surely, 2^31434343169 is an apocalyptic number.

It is an amenable number.

31434343169 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434343169 is an equidigital number, since it uses as much as digits as its factorization.

31434343169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 41.

The spelling of 31434343169 in words is "thirty-one billion, four hundred thirty-four million, three hundred forty-three thousand, one hundred sixty-nine".