421506313 has 8 divisors (see below), whose sum is σ = 452963232. Its totient is φ = 390789696.

The previous prime is 421506311. The next prime is 421506359. The reversal of 421506313 is 313605124.

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 421506313 - 2¹ = 421506311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421506311) 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, 183895 + ... + 186172.

It is an arithmetic number, because the mean of its divisors is an integer number (56620404).

Almost surely, 2^421506313 is an apocalyptic number.

It is an amenable number.

421506313 is a deficient number, since it is larger than the sum of its proper divisors (31456919).

421506313 is a wasteful number, since it uses less digits than its factorization.

421506313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370151.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 421506313 is about 20530.6189141974. The cubic root of 421506313 is about 749.7814551385.

The spelling of 421506313 in words is "four hundred twenty-one million, five hundred six thousand, three hundred thirteen".