31012200213 has 24 divisors (see below), whose sum is σ = 43256845632. Its totient is φ = 19761591168.

The previous prime is 31012200199. The next prime is 31012200217. The reversal of 31012200213 is 31200221013.

It is not a de Polignac number, because 31012200213 - 2⁵ = 31012200181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31012200192 and 31012200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012200217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2458320 + ... + 2470902.

It is an arithmetic number, because the mean of its divisors is an integer number (1802368568).

Almost surely, 2^31012200213 is an apocalyptic number.

It is an amenable number.

31012200213 is a deficient number, since it is larger than the sum of its proper divisors (12244645419).

31012200213 is a wasteful number, since it uses less digits than its factorization.

31012200213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14185 (or 14162 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31012200213 its reverse (31200221013), we get a palindrome (62212421226).

The spelling of 31012200213 in words is "thirty-one billion, twelve million, two hundred thousand, two hundred thirteen".