13243403431131 has 32 divisors (see below), whose sum is σ = 19202571348480. Its totient is φ = 8084712900096.

The previous prime is 13243403431087. The next prime is 13243403431147. The reversal of 13243403431131 is 13113430434231.

It is not a de Polignac number, because 13243403431131 - 2⁶ = 13243403431067 is a prime.

It is a super-2 number, since 2×13243403431131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13243403431092 and 13243403431101.

It is not an unprimeable number, because it can be changed into a prime (13243403431171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60098530 + ... + 60318488.

It is an arithmetic number, because the mean of its divisors is an integer number (600080354640).

Almost surely, 2^{13243403431131} is an apocalyptic number.

13243403431131 is a deficient number, since it is larger than the sum of its proper divisors (5959167917349).

13243403431131 is a wasteful number, since it uses less digits than its factorization.

13243403431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251923.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 13243403431131 its reverse (13113430434231), we get a palindrome (26356833865362).

The spelling of 13243403431131 in words is "thirteen trillion, two hundred forty-three billion, four hundred three million, four hundred thirty-one thousand, one hundred thirty-one".