31344102311231 has 4 divisors (see below), whose sum is σ = 31378660308072. Its totient is φ = 31309544314392.

The previous prime is 31344102311219. The next prime is 31344102311257. The reversal of 31344102311231 is 13211320144313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31344102311231 - 2¹⁰ = 31344102310207 is a prime.

It is a super-2 number, since 2×31344102311231² (a number of 28 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 = 31344102311194 and 31344102311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344102311531) 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, 17278997060 + ... + 17278998873.

It is an arithmetic number, because the mean of its divisors is an integer number (7844665077018).

Almost surely, 2^{31344102311231} is an apocalyptic number.

31344102311231 is a deficient number, since it is larger than the sum of its proper divisors (34557996841).

31344102311231 is an equidigital number, since it uses as much as digits as its factorization.

31344102311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34557996840.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 31344102311231 its reverse (13211320144313), we get a palindrome (44555422455544).

The spelling of 31344102311231 in words is "thirty-one trillion, three hundred forty-four billion, one hundred two million, three hundred eleven thousand, two hundred thirty-one".