123426053531 has 8 divisors (see below), whose sum is σ = 136928750400. Its totient is φ = 110303714440.

The previous prime is 123426053521. The next prime is 123426053537. The reversal of 123426053531 is 135350624321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123426053531 - 2⁶ = 123426053467 is a prime.

It is a super-2 number, since 2×123426053531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123426053491 and 123426053500.

It is not an unprimeable number, because it can be changed into a prime (123426053537) 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, 95088761 + ... + 95090058.

It is an arithmetic number, because the mean of its divisors is an integer number (17116093800).

Almost surely, 2^123426053531 is an apocalyptic number.

123426053531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123426053531 is a deficient number, since it is larger than the sum of its proper divisors (13502696869).

123426053531 is a wasteful number, since it uses less digits than its factorization.

123426053531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190178889.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 123426053531 its reverse (135350624321), we get a palindrome (258776677852).

The spelling of 123426053531 in words is "one hundred twenty-three billion, four hundred twenty-six million, fifty-three thousand, five hundred thirty-one".