351881663 has 8 divisors (see below), whose sum is σ = 402723360. Its totient is φ = 301183200.

The previous prime is 351881659. The next prime is 351881707. The reversal of 351881663 is 366188153.

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

It is not a de Polignac number, because 351881663 - 2² = 351881659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351881663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351881603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30488 + ... + 40413.

It is an arithmetic number, because the mean of its divisors is an integer number (50340420).

Almost surely, 2^351881663 is an apocalyptic number.

351881663 is a deficient number, since it is larger than the sum of its proper divisors (50841697).

351881663 is an equidigital number, since it uses as much as digits as its factorization.

351881663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71617.

The product of its digits is 103680, while the sum is 41.

The square root of 351881663 is about 18758.5090825470. The cubic root of 351881663 is about 705.9905349334.

The spelling of 351881663 in words is "three hundred fifty-one million, eight hundred eighty-one thousand, six hundred sixty-three".