343881551 has 8 divisors (see below), whose sum is σ = 389825520. Its totient is φ = 300722112.

The previous prime is 343881541. The next prime is 343881553. The reversal of 343881551 is 155188343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343881551 is a prime.

It is a super-2 number, since 2×343881551² = 236509042236331202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343881553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695870 + ... + 696363.

It is an arithmetic number, because the mean of its divisors is an integer number (48728190).

Almost surely, 2^343881551 is an apocalyptic number.

343881551 is a deficient number, since it is larger than the sum of its proper divisors (45943969).

343881551 is a wasteful number, since it uses less digits than its factorization.

343881551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392265.

The product of its digits is 57600, while the sum is 38.

The square root of 343881551 is about 18544.0435450308. The cubic root of 343881551 is about 700.5991815279.

The spelling of 343881551 in words is "three hundred forty-three million, eight hundred eighty-one thousand, five hundred fifty-one".