13131111423002 has 4 divisors (see below), whose sum is σ = 19696667134506. Its totient is φ = 6565555711500.

The previous prime is 13131111422999. The next prime is 13131111423007. The reversal of 13131111423002 is 20032411113131.

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

It can be written as a sum of positive squares in only one way, i.e., 8462275182001 + 4668836241001 = 2908999^2 + 2160749^2 .

It is not an unprimeable number, because it can be changed into a prime (13131111423007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282777855749 + ... + 3282777855752.

Almost surely, 2^{13131111423002} is an apocalyptic number.

13131111423002 is a deficient number, since it is larger than the sum of its proper divisors (6565555711504).

13131111423002 is an equidigital number, since it uses as much as digits as its factorization.

13131111423002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565555711503.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13131111423002 its reverse (20032411113131), we get a palindrome (33163522536133).

The spelling of 13131111423002 in words is "thirteen trillion, one hundred thirty-one billion, one hundred eleven million, four hundred twenty-three thousand, two".