123431453343 has 20 divisors (see below), whose sum is σ = 201147555048. Its totient is φ = 74806940880.

The previous prime is 123431453317. The next prime is 123431453351. The reversal of 123431453343 is 343354134321.

123431453343 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 314 + 5 + 334 + 3 = 666.

It is not a de Polignac number, because 123431453343 - 2⁶ = 123431453279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123431453298 and 123431453307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431453363) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69264796 + ... + 69266577.

Almost surely, 2^123431453343 is an apocalyptic number.

123431453343 is a deficient number, since it is larger than the sum of its proper divisors (77716101705).

123431453343 is a wasteful number, since it uses less digits than its factorization.

123431453343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138531396 (or 138531387 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

Adding to 123431453343 its reverse (343354134321), we get a palindrome (466785587664).

The spelling of 123431453343 in words is "one hundred twenty-three billion, four hundred thirty-one million, four hundred fifty-three thousand, three hundred forty-three".