31212003312213 has 16 divisors (see below), whose sum is σ = 43375528574976. Its totient is φ = 19941273641520.

The previous prime is 31212003312173. The next prime is 31212003312221. The reversal of 31212003312213 is 31221330021213.

It is not a de Polignac number, because 31212003312213 - 2¹⁰ = 31212003311189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212003312283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1629179445 + ... + 1629198602.

It is an arithmetic number, because the mean of its divisors is an integer number (2710970535936).

Almost surely, 2^{31212003312213} is an apocalyptic number.

It is an amenable number.

31212003312213 is a deficient number, since it is larger than the sum of its proper divisors (12163525262763).

31212003312213 is a wasteful number, since it uses less digits than its factorization.

31212003312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258378184.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31212003312213 its reverse (31221330021213), we get a palindrome (62433333333426).

The spelling of 31212003312213 in words is "thirty-one trillion, two hundred twelve billion, three million, three hundred twelve thousand, two hundred thirteen".