31032211213 has 8 divisors (see below), whose sum is σ = 32887444608. Its totient is φ = 29180289984.

The previous prime is 31032211181. The next prime is 31032211237. The reversal of 31032211213 is 31211223013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31032211213 - 2⁵ = 31032211181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032211513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808731 + ... + 846232.

It is an arithmetic number, because the mean of its divisors is an integer number (4110930576).

Almost surely, 2^31032211213 is an apocalyptic number.

It is an amenable number.

31032211213 is a deficient number, since it is larger than the sum of its proper divisors (1855233395).

31032211213 is a wasteful number, since it uses less digits than its factorization.

31032211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656083.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31032211213 its reverse (31211223013), we get a palindrome (62243434226).

The spelling of 31032211213 in words is "thirty-one billion, thirty-two million, two hundred eleven thousand, two hundred thirteen".