13604223531 has 8 divisors (see below), whose sum is σ = 19205962704. Its totient is φ = 8535983360.

The previous prime is 13604223509. The next prime is 13604223587. The reversal of 13604223531 is 13532240631.

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 13604223531 - 2⁹ = 13604223019 is a prime.

It is a super-2 number, since 2×13604223531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13604224531) 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, 133374690 + ... + 133374791.

It is an arithmetic number, because the mean of its divisors is an integer number (2400745338).

Almost surely, 2^13604223531 is an apocalyptic number.

13604223531 is a deficient number, since it is larger than the sum of its proper divisors (5601739173).

13604223531 is a wasteful number, since it uses less digits than its factorization.

13604223531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266749501.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 13604223531 in words is "thirteen billion, six hundred four million, two hundred twenty-three thousand, five hundred thirty-one".