13131402 has 16 divisors (see below), whose sum is σ = 26298432. Its totient is φ = 4371200.

The previous prime is 13131401. The next prime is 13131407. The reversal of 13131402 is 20413131.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13131401) 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 7 ways as a sum of consecutive naturals, for example, 7402 + ... + 9002.

It is an arithmetic number, because the mean of its divisors is an integer number (1643652).

Almost surely, 2^13131402 is an apocalyptic number.

13131402 is an abundant number, since it is smaller than the sum of its proper divisors (13167030).

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

13131402 is a wasteful number, since it uses less digits than its factorization.

13131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13131402 is about 3623.7276387720. The cubic root of 13131402 is about 235.9230453873.

Adding to 13131402 its reverse (20413131), we get a palindrome (33544533).

The spelling of 13131402 in words is "thirteen million, one hundred thirty-one thousand, four hundred two".