13504220031 has 16 divisors (see below), whose sum is σ = 18697771008. Its totient is φ = 8660220000.

The previous prime is 13504220027. The next prime is 13504220053. The reversal of 13504220031 is 13002240531.

It is not a de Polignac number, because 13504220031 - 2² = 13504220027 is a prime.

It is a super-2 number, since 2×13504220031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419220 + ... + 450281.

It is an arithmetic number, because the mean of its divisors is an integer number (1168610688).

Almost surely, 2^13504220031 is an apocalyptic number.

13504220031 is a deficient number, since it is larger than the sum of its proper divisors (5193550977).

13504220031 is a wasteful number, since it uses less digits than its factorization.

13504220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869702.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 13504220031 its reverse (13002240531), we get a palindrome (26506460562).

The spelling of 13504220031 in words is "thirteen billion, five hundred four million, two hundred twenty thousand, thirty-one".