431240332401 has 10 divisors (see below), whose sum is σ = 644198521362. Its totient is φ = 287493554880.

The previous prime is 431240332321. The next prime is 431240332459. The reversal of 431240332401 is 104233042134.

431240332401 is a `hidden beast` number, since 4 + 3 + 12 + 403 + 3 + 240 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 415669036176 + 15571296225 = 644724^2 + 124785^2 .

It is not a de Polignac number, because 431240332401 - 2⁹ = 431240331889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (431240332301) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2661977280 + ... + 2661977441.

Almost surely, 2^431240332401 is an apocalyptic number.

It is an amenable number.

431240332401 is a deficient number, since it is larger than the sum of its proper divisors (212958188961).

431240332401 is an equidigital number, since it uses as much as digits as its factorization.

431240332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323954733 (or 5323954724 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 431240332401 its reverse (104233042134), we get a palindrome (535473374535).

The spelling of 431240332401 in words is "four hundred thirty-one billion, two hundred forty million, three hundred thirty-two thousand, four hundred one".