431323454421205 has 4 divisors (see below), whose sum is σ = 517588145305452. Its totient is φ = 345058763536960.

The previous prime is 431323454421149. The next prime is 431323454421241. The reversal of 431323454421205 is 502124454323134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92446090482321 + 338877363938884 = 9614889^2 + 18408622^2 .

It is not a de Polignac number, because 431323454421205 - 2¹¹ = 431323454419157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43132345442116 + ... + 43132345442125.

It is an arithmetic number, because the mean of its divisors is an integer number (129397036326363).

Almost surely, 2^{431323454421205} is an apocalyptic number.

It is an amenable number.

431323454421205 is a deficient number, since it is larger than the sum of its proper divisors (86264690884247).

431323454421205 is an equidigital number, since it uses as much as digits as its factorization.

431323454421205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86264690884246.

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 431323454421205 in words is "four hundred thirty-one trillion, three hundred twenty-three billion, four hundred fifty-four million, four hundred twenty-one thousand, two hundred five".