31040340127 has 2 divisors, whose sum is σ = 31040340128. Its totient is φ = 31040340126.

The previous prime is 31040340113. The next prime is 31040340169. The reversal of 31040340127 is 72104304013.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31040340127 is a prime.

It is a super-2 number, since 2×31040340127² (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 (31040340197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15520170063 + 15520170064.

It is an arithmetic number, because the mean of its divisors is an integer number (15520170064).

Almost surely, 2^31040340127 is an apocalyptic number.

31040340127 is a deficient number, since it is larger than the sum of its proper divisors (1).

31040340127 is an equidigital number, since it uses as much as digits as its factorization.

31040340127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The spelling of 31040340127 in words is "thirty-one billion, forty million, three hundred forty thousand, one hundred twenty-seven".