423123131001 has 4 divisors (see below), whose sum is σ = 564164174672. Its totient is φ = 282082087332.

The previous prime is 423123130961. The next prime is 423123131021. The reversal of 423123131001 is 100131321324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-423123131001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423123131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70520521831 + ... + 70520521836.

It is an arithmetic number, because the mean of its divisors is an integer number (141041043668).

Almost surely, 2^423123131001 is an apocalyptic number.

It is an amenable number.

423123131001 is a deficient number, since it is larger than the sum of its proper divisors (141041043671).

423123131001 is a wasteful number, since it uses less digits than its factorization.

423123131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141041043670.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 423123131001 its reverse (100131321324), we get a palindrome (523254452325).

The spelling of 423123131001 in words is "four hundred twenty-three billion, one hundred twenty-three million, one hundred thirty-one thousand, one".