423340432431 has 16 divisors (see below), whose sum is σ = 646248351744. Its totient is φ = 241474505184.

The previous prime is 423340432397. The next prime is 423340432481. The reversal of 423340432431 is 134234043324.

It is a happy number.

It is not a de Polignac number, because 423340432431 - 2⁹ = 423340431919 is a prime.

It is a super-2 number, since 2×423340432431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423340432392 and 423340432401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423340432481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18084415 + ... + 18107808.

It is an arithmetic number, because the mean of its divisors is an integer number (40390521984).

Almost surely, 2^423340432431 is an apocalyptic number.

423340432431 is a deficient number, since it is larger than the sum of its proper divisors (222907919313).

423340432431 is a wasteful number, since it uses less digits than its factorization.

423340432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36192790.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 423340432431 its reverse (134234043324), we get a palindrome (557574475755).

The spelling of 423340432431 in words is "four hundred twenty-three billion, three hundred forty million, four hundred thirty-two thousand, four hundred thirty-one".