347885333981 has 2 divisors, whose sum is σ = 347885333982. Its totient is φ = 347885333980.

The previous prime is 347885333927. The next prime is 347885334067. The reversal of 347885333981 is 189333588743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269895835225 + 77989498756 = 519515^2 + 279266^2 .

It is a cyclic number.

It is not a de Polignac number, because 347885333981 - 2³⁴ = 330705464797 is a prime.

It is a super-2 number, since 2×347885333981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347885333281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173942666990 + 173942666991.

It is an arithmetic number, because the mean of its divisors is an integer number (173942666991).

Almost surely, 2^347885333981 is an apocalyptic number.

It is an amenable number.

347885333981 is a deficient number, since it is larger than the sum of its proper divisors (1).

347885333981 is an equidigital number, since it uses as much as digits as its factorization.

347885333981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 62.

The spelling of 347885333981 in words is "three hundred forty-seven billion, eight hundred eighty-five million, three hundred thirty-three thousand, nine hundred eighty-one".