31231322313213 has 32 divisors (see below), whose sum is σ = 46761421639680. Its totient is φ = 18374553207360.

The previous prime is 31231322313197. The next prime is 31231322313227.

31231322313213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31231322313213 - 2⁴ = 31231322313197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231322313253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28596645 + ... + 29668682.

It is an arithmetic number, because the mean of its divisors is an integer number (1461294426240).

Almost surely, 2^{31231322313213} is an apocalyptic number.

31231322313213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31231322313213 is a deficient number, since it is larger than the sum of its proper divisors (15530099326467).

31231322313213 is a wasteful number, since it uses less digits than its factorization.

31231322313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58265817.

The product of its digits is 11664, while the sum is 30.

It can be divided in two parts, 3123132 and 2313213, that added together give a palindrome (5436345).

The spelling of 31231322313213 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-two million, three hundred thirteen thousand, two hundred thirteen".