31301103213 has 40 divisors (see below), whose sum is σ = 49274793216. Its totient is φ = 19762380000.

The previous prime is 31301103187. The next prime is 31301103241. The reversal of 31301103213 is 31230110313.

It is a happy number.

31301103213 is a `hidden beast` number, since 31 + 301 + 10 + 321 + 3 = 666.

It is not a de Polignac number, because 31301103213 - 2¹⁴ = 31301086829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301103283) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 104988 + ... + 271338.

Almost surely, 2^31301103213 is an apocalyptic number.

It is an amenable number.

31301103213 is a deficient number, since it is larger than the sum of its proper divisors (17973690003).

31301103213 is a wasteful number, since it uses less digits than its factorization.

31301103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166487 (or 166478 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31301103213 its reverse (31230110313), we get a palindrome (62531213526).

The spelling of 31301103213 in words is "thirty-one billion, three hundred one million, one hundred three thousand, two hundred thirteen".