87070434971731 has 2 divisors, whose sum is σ = 87070434971732. Its totient is φ = 87070434971730.

The previous prime is 87070434971719. The next prime is 87070434971761. The reversal of 87070434971731 is 13717943407078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87070434971731 - 2⁷ = 87070434971603 is a prime.

It is a super-2 number, since 2×87070434971731² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87070434971731.

It is not a weakly prime, because it can be changed into another prime (87070434971711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535217485865 + 43535217485866.

It is an arithmetic number, because the mean of its divisors is an integer number (43535217485866).

Almost surely, 2^{87070434971731} is an apocalyptic number.

87070434971731 is a deficient number, since it is larger than the sum of its proper divisors (1).

87070434971731 is an equidigital number, since it uses as much as digits as its factorization.

87070434971731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 87070434971731 in words is "eighty-seven trillion, seventy billion, four hundred thirty-four million, nine hundred seventy-one thousand, seven hundred thirty-one".