31301300143 has 2 divisors, whose sum is σ = 31301300144. Its totient is φ = 31301300142.

The previous prime is 31301300081. The next prime is 31301300153. The reversal of 31301300143 is 34100310313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31301300143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31301300143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301300153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650650071 + 15650650072.

It is an arithmetic number, because the mean of its divisors is an integer number (15650650072).

Almost surely, 2^31301300143 is an apocalyptic number.

31301300143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301300143 is an equidigital number, since it uses as much as digits as its factorization.

31301300143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31301300143 its reverse (34100310313), we get a palindrome (65401610456).

The spelling of 31301300143 in words is "thirty-one billion, three hundred one million, three hundred thousand, one hundred forty-three".