31143000310069 has 2 divisors, whose sum is σ = 31143000310070. Its totient is φ = 31143000310068.

The previous prime is 31143000309961. The next prime is 31143000310129. The reversal of 31143000310069 is 96001300034113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25415330815044 + 5727669495025 = 5041362^2 + 2393255^2 .

It is an emirp because it is prime and its reverse (96001300034113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31143000310069 - 2²¹ = 31142998212917 is a prime.

It is a super-2 number, since 2×31143000310069² (a number of 28 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 31143000310069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143000310469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571500155034 + 15571500155035.

It is an arithmetic number, because the mean of its divisors is an integer number (15571500155035).

Almost surely, 2^{31143000310069} is an apocalyptic number.

It is an amenable number.

31143000310069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143000310069 is an equidigital number, since it uses as much as digits as its factorization.

31143000310069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 31143000310069 in words is "thirty-one trillion, one hundred forty-three billion, three hundred ten thousand, sixty-nine".