13211240531 has 8 divisors (see below), whose sum is σ = 13908038400. Its totient is φ = 12514589640.

The previous prime is 13211240491. The next prime is 13211240543. The reversal of 13211240531 is 13504211231.

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 13211240531 - 2⁶ = 13211240467 is a prime.

It is a super-2 number, since 2×13211240531² (a number of 21 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 = 13211240497 and 13211240506.

It is not an unprimeable number, because it can be changed into a prime (13211243531) 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, 180866 + ... + 243176.

It is an arithmetic number, because the mean of its divisors is an integer number (1738504800).

Almost surely, 2^13211240531 is an apocalyptic number.

13211240531 is a deficient number, since it is larger than the sum of its proper divisors (696797869).

13211240531 is a wasteful number, since it uses less digits than its factorization.

13211240531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73489.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13211240531 its reverse (13504211231), we get a palindrome (26715451762).

The spelling of 13211240531 in words is "thirteen billion, two hundred eleven million, two hundred forty thousand, five hundred thirty-one".