13031331001 has 4 divisors (see below), whose sum is σ = 14033741092. Its totient is φ = 12028920912.

The previous prime is 13031330927. The next prime is 13031331017. The reversal of 13031331001 is 10013313031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10013313031 = 331 ⋅30251701.

It can be written as a sum of positive squares in 2 ways, for example, as 1161446400 + 11869884601 = 34080^2 + 108949^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031331001 - 2¹¹ = 13031328953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031335001) 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, 501205026 + ... + 501205051.

It is an arithmetic number, because the mean of its divisors is an integer number (3508435273).

Almost surely, 2^13031331001 is an apocalyptic number.

It is an amenable number.

13031331001 is a deficient number, since it is larger than the sum of its proper divisors (1002410091).

13031331001 is a wasteful number, since it uses less digits than its factorization.

13031331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002410090.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 13031331001 its reverse (10013313031), we get a palindrome (23044644032).

The spelling of 13031331001 in words is "thirteen billion, thirty-one million, three hundred thirty-one thousand, one".