348481991 has 8 divisors (see below), whose sum is σ = 409405584. Its totient is φ = 292432320.

The previous prime is 348481981. The next prime is 348481999. The reversal of 348481991 is 199184843.

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

It is a cyclic number.

It is not a de Polignac number, because 348481991 - 2¹⁰ = 348480967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348481999) 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, 1218326 + ... + 1218611.

It is an arithmetic number, because the mean of its divisors is an integer number (51175698).

Almost surely, 2^348481991 is an apocalyptic number.

348481991 is a deficient number, since it is larger than the sum of its proper divisors (60923593).

348481991 is a wasteful number, since it uses less digits than its factorization.

348481991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436961.

The product of its digits is 248832, while the sum is 47.

The square root of 348481991 is about 18667.6723508851. The cubic root of 348481991 is about 703.7095525950.

The spelling of 348481991 in words is "three hundred forty-eight million, four hundred eighty-one thousand, nine hundred ninety-one".