1231432345434 has 64 divisors (see below), whose sum is σ = 2648799740160. Its totient is φ = 380659023360.

The previous prime is 1231432345427. The next prime is 1231432345441. The reversal of 1231432345434 is 4345432341321.

It is an interprime number because it is at equal distance from previous prime (1231432345427) and next prime (1231432345441).

It is a junction number, because it is equal to n+sod(n) for n = 1231432345392 and 1231432345401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1005652 + ... + 1863920.

It is an arithmetic number, because the mean of its divisors is an integer number (41387495940).

Almost surely, 2^{1231432345434} is an apocalyptic number.

1231432345434 is an abundant number, since it is smaller than the sum of its proper divisors (1417367394726).

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

1231432345434 is a wasteful number, since it uses less digits than its factorization.

1231432345434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858615.

The product of its digits is 414720, while the sum is 39.

Adding to 1231432345434 its reverse (4345432341321), we get a palindrome (5576864686755).

The spelling of 1231432345434 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-two million, three hundred forty-five thousand, four hundred thirty-four".