31312230222213 has 12 divisors (see below), whose sum is σ = 45243798208128. Its totient is φ = 20867887277160.

The previous prime is 31312230222193. The next prime is 31312230222233. The reversal of 31312230222213 is 31222203221313.

31312230222213 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 223 + 0 + 222 + 213 = 666.

It is an interprime number because it is at equal distance from previous prime (31312230222193) and next prime (31312230222233).

It is not a de Polignac number, because 31312230222213 - 2³⁶ = 31243510745477 is a prime.

It is a super-2 number, since 2×31312230222213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312230222233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577710645 + ... + 577764842.

It is an arithmetic number, because the mean of its divisors is an integer number (3770316517344).

Almost surely, 2^{31312230222213} is an apocalyptic number.

It is an amenable number.

31312230222213 is a deficient number, since it is larger than the sum of its proper divisors (13931567985915).

31312230222213 is a wasteful number, since it uses less digits than its factorization.

31312230222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155478504 (or 1155478501 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31312230222213 its reverse (31222203221313), we get a palindrome (62534433443526).

The spelling of 31312230222213 in words is "thirty-one trillion, three hundred twelve billion, two hundred thirty million, two hundred twenty-two thousand, two hundred thirteen".