13423446531 has 12 divisors (see below), whose sum is σ = 21152097720. Its totient is φ = 8135422080.

The previous prime is 13423446527. The next prime is 13423446541. The reversal of 13423446531 is 13564432431.

13423446531 is a `hidden beast` number, since 13 + 42 + 34 + 46 + 531 = 666.

It is not a de Polignac number, because 13423446531 - 2² = 13423446527 is a prime.

It is a super-2 number, since 2×13423446531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13423446541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67795086 + ... + 67795283.

It is an arithmetic number, because the mean of its divisors is an integer number (1762674810).

Almost surely, 2^13423446531 is an apocalyptic number.

13423446531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13423446531 is a deficient number, since it is larger than the sum of its proper divisors (7728651189).

13423446531 is a wasteful number, since it uses less digits than its factorization.

13423446531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135590386 (or 135590383 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

Adding to 13423446531 its reverse (13564432431), we get a palindrome (26987878962).

It can be divided in two parts, 13423 and 446531, that added together give a palindrome (459954).

The spelling of 13423446531 in words is "thirteen billion, four hundred twenty-three million, four hundred forty-six thousand, five hundred thirty-one".