31230201213 has 32 divisors (see below), whose sum is σ = 46851847680. Its totient is φ = 20558059200.

The previous prime is 31230201179. The next prime is 31230201227. The reversal of 31230201213 is 31210203213.

It is not a de Polignac number, because 31230201213 - 2¹⁷ = 31230070141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230201283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1001820 + ... + 1032522.

It is an arithmetic number, because the mean of its divisors is an integer number (1464120240).

Almost surely, 2^31230201213 is an apocalyptic number.

It is an amenable number.

31230201213 is a deficient number, since it is larger than the sum of its proper divisors (15621646467).

31230201213 is a wasteful number, since it uses less digits than its factorization.

31230201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31186 (or 31180 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31230201213 its reverse (31210203213), we get a palindrome (62440404426).

The spelling of 31230201213 in words is "thirty-one billion, two hundred thirty million, two hundred one thousand, two hundred thirteen".