340048581 has 4 divisors (see below), whose sum is σ = 453398112. Its totient is φ = 226699052.

The previous prime is 340048571. The next prime is 340048591. The reversal of 340048581 is 185840043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 185840043 = 3 ⋅61946681.

It is an interprime number because it is at equal distance from previous prime (340048571) and next prime (340048591).

It is a cyclic number.

It is not a de Polignac number, because 340048581 - 2¹⁰ = 340047557 is a prime.

It is a super-2 number, since 2×340048581² = 231266074880227122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340048531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56674761 + ... + 56674766.

It is an arithmetic number, because the mean of its divisors is an integer number (113349528).

Almost surely, 2^340048581 is an apocalyptic number.

It is an amenable number.

340048581 is a deficient number, since it is larger than the sum of its proper divisors (113349531).

340048581 is a wasteful number, since it uses less digits than its factorization.

340048581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113349530.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 340048581 is about 18440.4062048535. The cubic root of 340048581 is about 697.9864455240.

The spelling of 340048581 in words is "three hundred forty million, forty-eight thousand, five hundred eighty-one".