31102223120213 has 4 divisors (see below), whose sum is σ = 35545397851680. Its totient is φ = 26659048388748.

The previous prime is 31102223120207. The next prime is 31102223120231. The reversal of 31102223120213 is 31202132220113.

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 31102223120213 - 2⁶ = 31102223120149 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 (31102223129213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2221587365723 + ... + 2221587365736.

It is an arithmetic number, because the mean of its divisors is an integer number (8886349462920).

Almost surely, 2^{31102223120213} is an apocalyptic number.

It is an amenable number.

31102223120213 is a deficient number, since it is larger than the sum of its proper divisors (4443174731467).

31102223120213 is an equidigital number, since it uses as much as digits as its factorization.

31102223120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443174731466.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31102223120213 its reverse (31202132220113), we get a palindrome (62304355340326).

The spelling of 31102223120213 in words is "thirty-one trillion, one hundred two billion, two hundred twenty-three million, one hundred twenty thousand, two hundred thirteen".