123534443131 has 6 divisors (see below), whose sum is σ = 135785792996. Its totient is φ = 112304039100.

The previous prime is 123534443117. The next prime is 123534443189. The reversal of 123534443131 is 131344435321.

It is not a de Polignac number, because 123534443131 - 2⁷ = 123534443003 is a prime.

It is a super-2 number, since 2×123534443131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123534443531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510472785 + ... + 510473026.

Almost surely, 2^123534443131 is an apocalyptic number.

123534443131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123534443131 is a deficient number, since it is larger than the sum of its proper divisors (12251349865).

123534443131 is a wasteful number, since it uses less digits than its factorization.

123534443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020945833 (or 1020945822 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

Adding to 123534443131 its reverse (131344435321), we get a palindrome (254878878452).

It can be divided in two parts, 123534 and 443131, that added together give a palindrome (566665).

The spelling of 123534443131 in words is "one hundred twenty-three billion, five hundred thirty-four million, four hundred forty-three thousand, one hundred thirty-one".