431121122450 has 18 divisors (see below), whose sum is σ = 801893923551. Its totient is φ = 172446591840.

The previous prime is 431121122423. The next prime is 431121122461. The reversal of 431121122450 is 54221121134.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 398232937249 + 32888185201 = 631057^2 + 181351^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=464285.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4596422 + ... + 4689278.

Almost surely, 2^431121122450 is an apocalyptic number.

431121122450 is a deficient number, since it is larger than the sum of its proper divisors (370772801101).

431121122450 is an frugal number, since it uses more digits than its factorization.

431121122450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185726 (or 92864 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 431121122450 its reverse (54221121134), we get a palindrome (485342243584).

The spelling of 431121122450 in words is "four hundred thirty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, four hundred fifty".