340551021 has 8 divisors (see below), whose sum is σ = 480777984. Its totient is φ = 213679040.

The previous prime is 340551011. The next prime is 340551053. The reversal of 340551021 is 120155043.

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 340551021 - 2⁷ = 340550893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340551011) 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, 3338685 + ... + 3338786.

It is an arithmetic number, because the mean of its divisors is an integer number (60097248).

Almost surely, 2^340551021 is an apocalyptic number.

It is an amenable number.

340551021 is a deficient number, since it is larger than the sum of its proper divisors (140226963).

340551021 is a wasteful number, since it uses less digits than its factorization.

340551021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677491.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 340551021 is about 18454.0245204129. The cubic root of 340551021 is about 698.3300471413.

The spelling of 340551021 in words is "three hundred forty million, five hundred fifty-one thousand, twenty-one".