431619662389 has 4 divisors (see below), whose sum is σ = 432084270060. Its totient is φ = 431155054720.

The previous prime is 431619662359. The next prime is 431619662423. The reversal of 431619662389 is 983266916134.

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 19670062500 + 411949599889 = 140250^2 + 641833^2 .

It is a cyclic number.

It is not a de Polignac number, because 431619662389 - 2¹⁵ = 431619629621 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431619662359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232302442 + ... + 232304299.

It is an arithmetic number, because the mean of its divisors is an integer number (108021067515).

Almost surely, 2^431619662389 is an apocalyptic number.

It is an amenable number.

431619662389 is a deficient number, since it is larger than the sum of its proper divisors (464607671).

431619662389 is an equidigital number, since it uses as much as digits as its factorization.

431619662389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464607670.

The product of its digits is 10077696, while the sum is 58.

The spelling of 431619662389 in words is "four hundred thirty-one billion, six hundred nineteen million, six hundred sixty-two thousand, three hundred eighty-nine".