123355334357 has 4 divisors (see below), whose sum is σ = 123383115276. Its totient is φ = 123327553440.

The previous prime is 123355334341. The next prime is 123355334359. The reversal of 123355334357 is 753433553321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753433553321 = 149 ⋅5056601029.

It can be written as a sum of positive squares in 2 ways, for example, as 83261679601 + 40093654756 = 288551^2 + 200234^2 .

It is a cyclic number.

It is not a de Polignac number, because 123355334357 - 2⁴ = 123355334341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123355334359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13883798 + ... + 13892679.

It is an arithmetic number, because the mean of its divisors is an integer number (30845778819).

Almost surely, 2^123355334357 is an apocalyptic number.

It is an amenable number.

123355334357 is a deficient number, since it is larger than the sum of its proper divisors (27780919).

123355334357 is an equidigital number, since it uses as much as digits as its factorization.

123355334357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780918.

The product of its digits is 1701000, while the sum is 44.

Adding to 123355334357 its reverse (753433553321), we get a palindrome (876788887678).

The spelling of 123355334357 in words is "one hundred twenty-three billion, three hundred fifty-five million, three hundred thirty-four thousand, three hundred fifty-seven".