13031011031 has 4 divisors (see below), whose sum is σ = 13597576752. Its totient is φ = 12464445312.

The previous prime is 13031011009. The next prime is 13031011043. The reversal of 13031011031 is 13011013031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13011013031 = 11059 ⋅1176509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13031011031 is a prime.

It is a super-2 number, since 2×13031011031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031010997 and 13031011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031017031) 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, 283282826 + ... + 283282871.

It is an arithmetic number, because the mean of its divisors is an integer number (3399394188).

Almost surely, 2^13031011031 is an apocalyptic number.

13031011031 is a deficient number, since it is larger than the sum of its proper divisors (566565721).

13031011031 is an equidigital number, since it uses as much as digits as its factorization.

13031011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566565720.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 13031011031 its reverse (13011013031), we get a palindrome (26042024062).

The spelling of 13031011031 in words is "thirteen billion, thirty-one million, eleven thousand, thirty-one".