31431320303087 has 2 divisors, whose sum is σ = 31431320303088. Its totient is φ = 31431320303086.

The previous prime is 31431320303081. The next prime is 31431320303137. The reversal of 31431320303087 is 78030302313413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31431320303087 - 2¹⁴ = 31431320286703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31431320303087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31431320303081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715660151543 + 15715660151544.

It is an arithmetic number, because the mean of its divisors is an integer number (15715660151544).

Almost surely, 2^{31431320303087} is an apocalyptic number.

31431320303087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31431320303087 is an equidigital number, since it uses as much as digits as its factorization.

31431320303087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 31431320303087 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred twenty million, three hundred three thousand, eighty-seven".