31243355334213 has 16 divisors (see below), whose sum is σ = 45445307261952. Its totient is φ = 18935189046000.

The previous prime is 31243355334209. The next prime is 31243355334287.

31243355334213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31243355334213 - 2² = 31243355334209 is a prime.

It is a super-2 number, since 2×31243355334213² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31243355334613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834583 + ... + 7948788.

It is an arithmetic number, because the mean of its divisors is an integer number (2840331703872).

Almost surely, 2^{31243355334213} is an apocalyptic number.

31243355334213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31243355334213 is a deficient number, since it is larger than the sum of its proper divisors (14201951927739).

31243355334213 is a wasteful number, since it uses less digits than its factorization.

31243355334213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891176.

The product of its digits is 1166400, while the sum is 42.

It can be divided in two parts, 3124335 and 5334213, that added together give a palindrome (8458548).

The spelling of 31243355334213 in words is "thirty-one trillion, two hundred forty-three billion, three hundred fifty-five million, three hundred thirty-four thousand, two hundred thirteen".