31234344343213 has 4 divisors (see below), whose sum is σ = 34073830192608. Its totient is φ = 28394858493820.

The previous prime is 31234344343199. The next prime is 31234344343253.

31234344343213 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 a cyclic number.

It is not a de Polignac number, because 31234344343213 - 2⁹ = 31234344342701 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 (31234344343253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419742924681 + ... + 1419742924702.

It is an arithmetic number, because the mean of its divisors is an integer number (8518457548152).

Almost surely, 2^{31234344343213} is an apocalyptic number.

It is an amenable number.

31234344343213 is a deficient number, since it is larger than the sum of its proper divisors (2839485849395).

31234344343213 is a wasteful number, since it uses less digits than its factorization.

31234344343213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839485849394.

The product of its digits is 746496, while the sum is 40.

It can be divided in two parts, 3123434 and 4343213, that added together give a palindrome (7466647).

The spelling of 31234344343213 in words is "thirty-one trillion, two hundred thirty-four billion, three hundred forty-four million, three hundred forty-three thousand, two hundred thirteen".