31132320071 has 2 divisors, whose sum is σ = 31132320072. Its totient is φ = 31132320070.

The previous prime is 31132320029. The next prime is 31132320101. The reversal of 31132320071 is 17002323113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31132320071 - 2¹⁴ = 31132303687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31132323071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566160035 + 15566160036.

It is an arithmetic number, because the mean of its divisors is an integer number (15566160036).

Almost surely, 2^31132320071 is an apocalyptic number.

31132320071 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132320071 is an equidigital number, since it uses as much as digits as its factorization.

31132320071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 31132320071 its reverse (17002323113), we get a palindrome (48134643184).

The spelling of 31132320071 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty thousand, seventy-one".