31211130222213 has 16 divisors (see below), whose sum is σ = 43963236208320. Its totient is φ = 19641129250176.

The previous prime is 31211130222197. The next prime is 31211130222227. The reversal of 31211130222213 is 31222203111213.

It is not a de Polignac number, because 31211130222213 - 2⁴ = 31211130222197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211130220213) 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, 988366320 + ... + 988397897.

It is an arithmetic number, because the mean of its divisors is an integer number (2747702263020).

Almost surely, 2^{31211130222213} is an apocalyptic number.

It is an amenable number.

31211130222213 is a deficient number, since it is larger than the sum of its proper divisors (12752105986107).

31211130222213 is a wasteful number, since it uses less digits than its factorization.

31211130222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976764516.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31211130222213 its reverse (31222203111213), we get a palindrome (62433333333426).

The spelling of 31211130222213 in words is "thirty-one trillion, two hundred eleven billion, one hundred thirty million, two hundred twenty-two thousand, two hundred thirteen".