31120132213 has 8 divisors (see below), whose sum is σ = 31551110936. Its totient is φ = 30689280000.

The previous prime is 31120132207. The next prime is 31120132217. The reversal of 31120132213 is 31223102113.

It can be written as a sum of positive squares in 4 ways, for example, as 13054890564 + 18065241649 = 114258^2 + 134407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31120132213 - 2⁵ = 31120132181 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 (31120132217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532963 + ... + 588463.

It is an arithmetic number, because the mean of its divisors is an integer number (3943888867).

Almost surely, 2^31120132213 is an apocalyptic number.

It is an amenable number.

31120132213 is a deficient number, since it is larger than the sum of its proper divisors (430978723).

31120132213 is an equidigital number, since it uses as much as digits as its factorization.

31120132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63255.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31120132213 its reverse (31223102113), we get a palindrome (62343234326).

The spelling of 31120132213 in words is "thirty-one billion, one hundred twenty million, one hundred thirty-two thousand, two hundred thirteen".