423102531 has 4 divisors (see below), whose sum is σ = 564136712. Its totient is φ = 282068352.

The previous prime is 423102509. The next prime is 423102541. The reversal of 423102531 is 135201324.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 423102531 - 2⁹ = 423102019 is a prime.

It is a super-2 number, since 2×423102531² = 358031503477211922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423102498 and 423102507.

It is not an unprimeable number, because it can be changed into a prime (423102541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70517086 + ... + 70517091.

It is an arithmetic number, because the mean of its divisors is an integer number (141034178).

Almost surely, 2^423102531 is an apocalyptic number.

423102531 is a deficient number, since it is larger than the sum of its proper divisors (141034181).

423102531 is a wasteful number, since it uses less digits than its factorization.

423102531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141034180.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 423102531 is about 20569.4562640824. The cubic root of 423102531 is about 750.7267213850.

Adding to 423102531 its reverse (135201324), we get a palindrome (558303855).

The spelling of 423102531 in words is "four hundred twenty-three million, one hundred two thousand, five hundred thirty-one".