423540351 has 24 divisors (see below), whose sum is σ = 659554896. Its totient is φ = 260357760.

The previous prime is 423540349. The next prime is 423540401. The reversal of 423540351 is 153045324.

It is not a de Polignac number, because 423540351 - 2¹ = 423540349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423540311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172291 + ... + 174731.

It is an arithmetic number, because the mean of its divisors is an integer number (27481454).

Almost surely, 2^423540351 is an apocalyptic number.

423540351 is a deficient number, since it is larger than the sum of its proper divisors (236014545).

423540351 is a wasteful number, since it uses less digits than its factorization.

423540351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 423540351 is about 20580.0959910298. The cubic root of 423540351 is about 750.9855789449.

Adding to 423540351 its reverse (153045324), we get a palindrome (576585675).

The spelling of 423540351 in words is "four hundred twenty-three million, five hundred forty thousand, three hundred fifty-one".