423870531 has 12 divisors (see below), whose sum is σ = 657432072. Its totient is φ = 242211648.

The previous prime is 423870529. The next prime is 423870539. The reversal of 423870531 is 135078324.

It is not a de Polignac number, because 423870531 - 2¹ = 423870529 is a prime.

It is a super-2 number, since 2×423870531² = 359332454100443922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423870492 and 423870501.

It is not an unprimeable number, because it can be changed into a prime (423870539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1441590 + ... + 1441883.

It is an arithmetic number, because the mean of its divisors is an integer number (54786006).

Almost surely, 2^423870531 is an apocalyptic number.

423870531 is a deficient number, since it is larger than the sum of its proper divisors (233561541).

423870531 is a wasteful number, since it uses less digits than its factorization.

423870531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883490 (or 2883483 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 423870531 is about 20588.1162567147. The cubic root of 423870531 is about 751.1806772485.

The spelling of 423870531 in words is "four hundred twenty-three million, eight hundred seventy thousand, five hundred thirty-one".