423021603631 has 24 divisors (see below), whose sum is σ = 493929984240. Its totient is φ = 360764110080.

The previous prime is 423021603569. The next prime is 423021603637. The reversal of 423021603631 is 136306120324.

It is not a de Polignac number, because 423021603631 - 2¹³ = 423021595439 is a prime.

It is a super-2 number, since 2×423021603631² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423021603593 and 423021603602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423021603637) 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, 296565 + ... + 966433.

It is an arithmetic number, because the mean of its divisors is an integer number (20580416010).

Almost surely, 2^423021603631 is an apocalyptic number.

423021603631 is a deficient number, since it is larger than the sum of its proper divisors (70908380609).

423021603631 is a wasteful number, since it uses less digits than its factorization.

423021603631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670215 (or 670204 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 423021603631 its reverse (136306120324), we get a palindrome (559327723955).

The spelling of 423021603631 in words is "four hundred twenty-three billion, twenty-one million, six hundred three thousand, six hundred thirty-one".