31032121214213 has 4 divisors (see below), whose sum is σ = 35465281387680. Its totient is φ = 26598961040748.

The previous prime is 31032121214209. The next prime is 31032121214233. The reversal of 31032121214213 is 31241212123013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31032121214213 - 2² = 31032121214209 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 (31032121214233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216580086723 + ... + 2216580086736.

It is an arithmetic number, because the mean of its divisors is an integer number (8866320346920).

Almost surely, 2^{31032121214213} is an apocalyptic number.

It is an amenable number.

31032121214213 is a deficient number, since it is larger than the sum of its proper divisors (4433160173467).

31032121214213 is an equidigital number, since it uses as much as digits as its factorization.

31032121214213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433160173466.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31032121214213 its reverse (31241212123013), we get a palindrome (62273333337226).

The spelling of 31032121214213 in words is "thirty-one trillion, thirty-two billion, one hundred twenty-one million, two hundred fourteen thousand, two hundred thirteen".