343677781071 has 24 divisors (see below), whose sum is σ = 526474138320. Its totient is φ = 215292531456.

The previous prime is 343677781067. The next prime is 343677781093. The reversal of 343677781071 is 170187776343.

343677781071 is a `hidden beast` number, since 3 + 436 + 77 + 78 + 1 + 0 + 71 = 666.

It is not a de Polignac number, because 343677781071 - 2² = 343677781067 is a prime.

It is a super-2 number, since 2×343677781071² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343677780999 and 343677781017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343677781021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1719720 + ... + 1909133.

It is an arithmetic number, because the mean of its divisors is an integer number (21936422430).

Almost surely, 2^343677781071 is an apocalyptic number.

343677781071 is a deficient number, since it is larger than the sum of its proper divisors (182796357249).

343677781071 is a wasteful number, since it uses less digits than its factorization.

343677781071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629495 (or 3629492 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 343677781071 in words is "three hundred forty-three billion, six hundred seventy-seven million, seven hundred eighty-one thousand, seventy-one".