423020444231 has 32 divisors (see below), whose sum is σ = 559368488448. Its totient is φ = 309712803840.

The previous prime is 423020444219. The next prime is 423020444243. The reversal of 423020444231 is 132444020324.

It is an interprime number because it is at equal distance from previous prime (423020444219) and next prime (423020444243).

It is not a de Polignac number, because 423020444231 - 2³⁸ = 148142537287 is a prime.

It is a super-2 number, since 2×423020444231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423020444194 and 423020444203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423020440231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503756 + ... + 1048718.

It is an arithmetic number, because the mean of its divisors is an integer number (17480265264).

Almost surely, 2^423020444231 is an apocalyptic number.

423020444231 is a deficient number, since it is larger than the sum of its proper divisors (136348044217).

423020444231 is a wasteful number, since it uses less digits than its factorization.

423020444231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545591.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 423020444231 its reverse (132444020324), we get a palindrome (555464464555).

The spelling of 423020444231 in words is "four hundred twenty-three billion, twenty million, four hundred forty-four thousand, two hundred thirty-one".