123053505531 has 8 divisors (see below), whose sum is σ = 178986917184. Its totient is φ = 74577882120.

The previous prime is 123053505461. The next prime is 123053505539. The reversal of 123053505531 is 135505350321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-123053505531 is a prime.

It is a super-2 number, since 2×123053505531² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3728894107 = 123053505531 / (1 + 2 + 3 + 0 + 5 + 3 + 5 + 0 + 5 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 123053505492 and 123053505501.

It is not an unprimeable number, because it can be changed into a prime (123053505539) 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, 1864447021 + ... + 1864447086.

It is an arithmetic number, because the mean of its divisors is an integer number (22373364648).

Almost surely, 2^123053505531 is an apocalyptic number.

123053505531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123053505531 is a deficient number, since it is larger than the sum of its proper divisors (55933411653).

123053505531 is a wasteful number, since it uses less digits than its factorization.

123053505531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728894121.

The product of its (nonzero) digits is 33750, while the sum is 33.

Adding to 123053505531 its reverse (135505350321), we get a palindrome (258558855852).

The spelling of 123053505531 in words is "one hundred twenty-three billion, fifty-three million, five hundred five thousand, five hundred thirty-one".