31280266208213 has 4 divisors (see below), whose sum is σ = 34123926772608. Its totient is φ = 28436605643820.

The previous prime is 31280266208197. The next prime is 31280266208231.

It is a happy number.

31280266208213 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31280266208213 - 2⁴ = 31280266208197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31280266208413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421830282181 + ... + 1421830282202.

It is an arithmetic number, because the mean of its divisors is an integer number (8530981693152).

Almost surely, 2^{31280266208213} is an apocalyptic number.

It is an amenable number.

31280266208213 is a deficient number, since it is larger than the sum of its proper divisors (2843660564395).

31280266208213 is a wasteful number, since it uses less digits than its factorization.

31280266208213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843660564394.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 31280266208213 in words is "thirty-one trillion, two hundred eighty billion, two hundred sixty-six million, two hundred eight thousand, two hundred thirteen".