31320407507 has 2 divisors, whose sum is σ = 31320407508. Its totient is φ = 31320407506.

The previous prime is 31320407501. The next prime is 31320407509. The reversal of 31320407507 is 70570402313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31320407507 - 2¹⁶ = 31320341971 is a prime.

Together with 31320407509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31320407501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660203753 + 15660203754.

It is an arithmetic number, because the mean of its divisors is an integer number (15660203754).

Almost surely, 2^31320407507 is an apocalyptic number.

31320407507 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320407507 is an equidigital number, since it uses as much as digits as its factorization.

31320407507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 31320407507 in words is "thirty-one billion, three hundred twenty million, four hundred seven thousand, five hundred seven".