13131402342031 has 4 divisors (see below), whose sum is σ = 13316351670864. Its totient is φ = 12946453013200.

The previous prime is 13131402341989. The next prime is 13131402342041. The reversal of 13131402342031 is 13024320413131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13131402342031 is a prime.

It is a super-4 number, since 4×13131402342031⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131402342041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92474664310 + ... + 92474664451.

It is an arithmetic number, because the mean of its divisors is an integer number (3329087917716).

Almost surely, 2^{13131402342031} is an apocalyptic number.

13131402342031 is a deficient number, since it is larger than the sum of its proper divisors (184949328833).

13131402342031 is an equidigital number, since it uses as much as digits as its factorization.

13131402342031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184949328832.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 13131402342031 its reverse (13024320413131), we get a palindrome (26155722755162).

The spelling of 13131402342031 in words is "thirteen trillion, one hundred thirty-one billion, four hundred two million, three hundred forty-two thousand, thirty-one".