31032021021211 has 8 divisors (see below), whose sum is σ = 35467279672320. Its totient is φ = 26597290567848.

The previous prime is 31032021021181. The next prime is 31032021021283. The reversal of 31032021021211 is 11212012023013.

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

It is not a de Polignac number, because 31032021021211 - 2²⁹ = 31031484150299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31032021021311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131923531 + ... + 132158548.

It is an arithmetic number, because the mean of its divisors is an integer number (4433409959040).

Almost surely, 2^{31032021021211} is an apocalyptic number.

31032021021211 is a deficient number, since it is larger than the sum of its proper divisors (4435258651109).

31032021021211 is a wasteful number, since it uses less digits than its factorization.

31032021021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264098873.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31032021021211 its reverse (11212012023013), we get a palindrome (42244033044224).

The spelling of 31032021021211 in words is "thirty-one trillion, thirty-two billion, twenty-one million, twenty-one thousand, two hundred eleven".