431544443442 has 24 divisors (see below), whose sum is σ = 1004001358896. Its totient is φ = 123298412328.

The previous prime is 431544443431. The next prime is 431544443467. The reversal of 431544443442 is 244344445134.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 431544443394 and 431544443403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 733918828 + ... + 733919415.

It is an arithmetic number, because the mean of its divisors is an integer number (41833389954).

Almost surely, 2^431544443442 is an apocalyptic number.

431544443442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

431544443442 is an abundant number, since it is smaller than the sum of its proper divisors (572456915454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431544443442 is a wasteful number, since it uses less digits than its factorization.

431544443442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467838262 (or 1467838255 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 42.

Adding to 431544443442 its reverse (244344445134), we get a palindrome (675888888576).

The spelling of 431544443442 in words is "four hundred thirty-one billion, five hundred forty-four million, four hundred forty-three thousand, four hundred forty-two".