423655431 has 8 divisors (see below), whose sum is σ = 574134384. Its totient is φ = 277806720.

The previous prime is 423655429. The next prime is 423655451. The reversal of 423655431 is 134556324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423655431 - 2¹ = 423655429 is a prime.

It is a super-2 number, since 2×423655431² = 358967848431591522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 423655392 and 423655401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423655411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157346 + ... + 1157711.

It is an arithmetic number, because the mean of its divisors is an integer number (71766798).

Almost surely, 2^423655431 is an apocalyptic number.

423655431 is a deficient number, since it is larger than the sum of its proper divisors (150478953).

423655431 is a wasteful number, since it uses less digits than its factorization.

423655431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315121.

The product of its digits is 43200, while the sum is 33.

The square root of 423655431 is about 20582.8917064634. The cubic root of 423655431 is about 751.0535894615.

The spelling of 423655431 in words is "four hundred twenty-three million, six hundred fifty-five thousand, four hundred thirty-one".