431505650212420 has 144 divisors (see below), whose sum is σ = 1056752202441600. Its totient is φ = 144969844838400.

The previous prime is 431505650212303. The next prime is 431505650212423. The reversal of 431505650212420 is 24212056505134.

It is a super-2 number, since 2×431505650212420² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431505650212423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136972131 + ... + 140087029.

It is an arithmetic number, because the mean of its divisors is an integer number (7338556961400).

Almost surely, 2^{431505650212420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431505650212420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528376101220800).

431505650212420 is an abundant number, since it is smaller than the sum of its proper divisors (625246552229180).

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

431505650212420 is a wasteful number, since it uses less digits than its factorization.

431505650212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115214 (or 3115111 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 431505650212420 in words is "four hundred thirty-one trillion, five hundred five billion, six hundred fifty million, two hundred twelve thousand, four hundred twenty".