31220033123213 has 8 divisors (see below), whose sum is σ = 34058426235840. Its totient is φ = 28381674724480.

The previous prime is 31220033123131. The next prime is 31220033123231. The reversal of 31220033123213 is 31232133002213.

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

It is not a de Polignac number, because 31220033123213 - 2²⁸ = 31219764687757 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 (31220033143213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6779945 + ... + 10411902.

It is an arithmetic number, because the mean of its divisors is an integer number (4257303279480).

Almost surely, 2^{31220033123213} is an apocalyptic number.

It is an amenable number.

31220033123213 is a deficient number, since it is larger than the sum of its proper divisors (2838393112627).

31220033123213 is a wasteful number, since it uses less digits than its factorization.

31220033123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17356947.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31220033123213 its reverse (31232133002213), we get a palindrome (62452166125426).

The spelling of 31220033123213 in words is "thirty-one trillion, two hundred twenty billion, thirty-three million, one hundred twenty-three thousand, two hundred thirteen".