423403435531 has 8 divisors (see below), whose sum is σ = 448315426944. Its totient is φ = 398492100480.

The previous prime is 423403435457. The next prime is 423403435537. The reversal of 423403435531 is 135534304324.

It is a happy number.

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 423403435531 - 2⁹ = 423403435019 is a prime.

It is a super-3 number, since 3×423403435531³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423403435537) 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, 1921446 + ... + 2130436.

It is an arithmetic number, because the mean of its divisors is an integer number (56039428368).

Almost surely, 2^423403435531 is an apocalyptic number.

423403435531 is a deficient number, since it is larger than the sum of its proper divisors (24911991413).

423403435531 is a wasteful number, since it uses less digits than its factorization.

423403435531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328181.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 423403435531 its reverse (135534304324), we get a palindrome (558937739855).

The spelling of 423403435531 in words is "four hundred twenty-three billion, four hundred three million, four hundred thirty-five thousand, five hundred thirty-one".