31864272007 has 2 divisors, whose sum is σ = 31864272008. Its totient is φ = 31864272006.

The previous prime is 31864271969. The next prime is 31864272043. The reversal of 31864272007 is 70027246813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31864272007 - 2³¹ = 29716788359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31864272907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15932136003 + 15932136004.

It is an arithmetic number, because the mean of its divisors is an integer number (15932136004).

Almost surely, 2^31864272007 is an apocalyptic number.

31864272007 is a deficient number, since it is larger than the sum of its proper divisors (1).

31864272007 is an equidigital number, since it uses as much as digits as its factorization.

31864272007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 31864272007 in words is "thirty-one billion, eight hundred sixty-four million, two hundred seventy-two thousand, seven".