13131768 has 32 divisors (see below), whose sum is σ = 35355600. Its totient is φ = 4040448.

The previous prime is 13131761. The next prime is 13131787. The reversal of 13131768 is 86713131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131761) 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, 20733 + ... + 21356.

Almost surely, 2^13131768 is an apocalyptic number.

It is an amenable number.

13131768 is an abundant number, since it is smaller than the sum of its proper divisors (22223832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131768 is a wasteful number, since it uses less digits than its factorization.

13131768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42111 (or 42107 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 13131768 is about 3623.7781389042. The cubic root of 13131768 is about 235.9252372587.

Adding to 13131768 its reverse (86713131), we get a palindrome (99844899).

It can be divided in two parts, 1313 and 1768, that added together give a triangular number (3081 = T₇₈).

The spelling of 13131768 in words is "thirteen million, one hundred thirty-one thousand, seven hundred sixty-eight".