431620 has 24 divisors (see below), whose sum is σ = 1036224. Its totient is φ = 147936.

The previous prime is 431617. The next prime is 431621. The reversal of 431620 is 26134.

It is a junction number, because it is equal to n+sod(n) for n = 431594 and 431603.

It is not an unprimeable number, because it can be changed into a prime (431621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402 + ... + 1681.

It is an arithmetic number, because the mean of its divisors is an integer number (43176).

2⁴³¹⁶²⁰ is an apocalyptic number.

It is an amenable number.

431620 is an abundant number, since it is smaller than the sum of its proper divisors (604604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431620 is a wasteful number, since it uses less digits than its factorization.

431620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099 (or 3097 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 431620 is about 656.9779296141. The cubic root of 431620 is about 75.5730912137.

Adding to 431620 its reverse (26134), we get a palindrome (457754).

It can be divided in two parts, 4316 and 20, that multiplied together give a triangular number (86320 = T₄₁₅).

The spelling of 431620 in words is "four hundred thirty-one thousand, six hundred twenty".