348038821 has 4 divisors (see below), whose sum is σ = 374811052. Its totient is φ = 321266592.

The previous prime is 348038809. The next prime is 348038833. The reversal of 348038821 is 128830843.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (348038809) and next prime (348038833).

It can be written as a sum of positive squares in 2 ways, for example, as 114254721 + 233784100 = 10689^2 + 15290^2 .

It is a cyclic number.

It is not a de Polignac number, because 348038821 - 2⁷ = 348038693 is a prime.

It is a super-2 number, since 2×348038821² = 242262041846140082, 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 (348038851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13386096 + ... + 13386121.

It is an arithmetic number, because the mean of its divisors is an integer number (93702763).

Almost surely, 2^348038821 is an apocalyptic number.

It is an amenable number.

348038821 is a deficient number, since it is larger than the sum of its proper divisors (26772231).

348038821 is a wasteful number, since it uses less digits than its factorization.

348038821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26772230.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 348038821 is about 18655.7985891786. The cubic root of 348038821 is about 703.4111199029.

The spelling of 348038821 in words is "three hundred forty-eight million, thirty-eight thousand, eight hundred twenty-one".