1231434455534 has 16 divisors (see below), whose sum is σ = 1906861326336. Its totient is φ = 595816599000.

The previous prime is 1231434455491. The next prime is 1231434455539. The reversal of 1231434455534 is 4355544341321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231434455539) 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, 325559 + ... + 1602765.

It is an arithmetic number, because the mean of its divisors is an integer number (119178832896).

Almost surely, 2^{1231434455534} is an apocalyptic number.

1231434455534 is a deficient number, since it is larger than the sum of its proper divisors (675426870802).

1231434455534 is a wasteful number, since it uses less digits than its factorization.

1231434455534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292791.

The product of its digits is 1728000, while the sum is 44.

Adding to 1231434455534 its reverse (4355544341321), we get a palindrome (5586978796855).

The spelling of 1231434455534 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-four million, four hundred fifty-five thousand, five hundred thirty-four".