31312101202213 has 16 divisors (see below), whose sum is σ = 34183737829696. Its totient is φ = 28506634508160.

The previous prime is 31312101202211. The next prime is 31312101202231. The reversal of 31312101202213 is 31220210121313.

It is a cyclic number.

It is not a de Polignac number, because 31312101202213 - 2¹ = 31312101202211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312101202211) 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, 30326206 + ... + 31341712.

It is an arithmetic number, because the mean of its divisors is an integer number (2136483614356).

Almost surely, 2^{31312101202213} is an apocalyptic number.

It is an amenable number.

31312101202213 is a deficient number, since it is larger than the sum of its proper divisors (2871636627483).

31312101202213 is a wasteful number, since it uses less digits than its factorization.

31312101202213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048084.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31312101202213 its reverse (31220210121313), we get a palindrome (62532311323526).

The spelling of 31312101202213 in words is "thirty-one trillion, three hundred twelve billion, one hundred one million, two hundred two thousand, two hundred thirteen".