431402123204 has 24 divisors (see below), whose sum is σ = 813059945880. Its totient is φ = 199100623104.

The previous prime is 431402123197. The next prime is 431402123209. The reversal of 431402123204 is 402321204134.

It can be written as a sum of positive squares in 4 ways, for example, as 95178420100 + 336223703104 = 308510^2 + 579848^2 .

It is a super-4 number, since 4×431402123204⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (431402123209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244192 + ... + 1552680.

It is an arithmetic number, because the mean of its divisors is an integer number (33877497745).

Almost surely, 2^431402123204 is an apocalyptic number.

It is an amenable number.

431402123204 is a deficient number, since it is larger than the sum of its proper divisors (381657822676).

431402123204 is a wasteful number, since it uses less digits than its factorization.

431402123204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335399 (or 335397 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 431402123204 its reverse (402321204134), we get a palindrome (833723327338).

The spelling of 431402123204 in words is "four hundred thirty-one billion, four hundred two million, one hundred twenty-three thousand, two hundred four".