31302232320213 has 12 divisors (see below), whose sum is σ = 45215310392928. Its totient is φ = 20867704963560.

The previous prime is 31302232320199. The next prime is 31302232320259. The reversal of 31302232320213 is 31202323220313.

31302232320213 is a `hidden beast` number, since 3 + 1 + 302 + 2 + 32 + 320 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 31302232320213 - 2¹⁴ = 31302232303829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302232320113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37052145 + ... + 37887542.

It is an arithmetic number, because the mean of its divisors is an integer number (3767942532744).

Almost surely, 2^{31302232320213} is an apocalyptic number.

It is an amenable number.

31302232320213 is a deficient number, since it is larger than the sum of its proper divisors (13913078072715).

31302232320213 is a wasteful number, since it uses less digits than its factorization.

31302232320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74986104 (or 74986101 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31302232320213 its reverse (31202323220313), we get a palindrome (62504555540526).

The spelling of 31302232320213 in words is "thirty-one trillion, three hundred two billion, two hundred thirty-two million, three hundred twenty thousand, two hundred thirteen".