31301120213 has 16 divisors (see below), whose sum is σ = 34510459776. Its totient is φ = 28152930240.

The previous prime is 31301120209. The next prime is 31301120231. The reversal of 31301120213 is 31202110313.

It is a cyclic number.

It is not a de Polignac number, because 31301120213 - 2² = 31301120209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301120191 and 31301120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301120243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1253195 + ... + 1277927.

It is an arithmetic number, because the mean of its divisors is an integer number (2156903736).

Almost surely, 2^31301120213 is an apocalyptic number.

It is an amenable number.

31301120213 is a deficient number, since it is larger than the sum of its proper divisors (3209339563).

31301120213 is a wasteful number, since it uses less digits than its factorization.

31301120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25964.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31301120213 its reverse (31202110313), we get a palindrome (62503230526).

The spelling of 31301120213 in words is "thirty-one billion, three hundred one million, one hundred twenty thousand, two hundred thirteen".