31232210213011 has 4 divisors (see below), whose sum is σ = 31237980070672. Its totient is φ = 31226440355352.

The previous prime is 31232210212981. The next prime is 31232210213027. The reversal of 31232210213011 is 11031201223213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232210213011 is a prime.

It is a super-2 number, since 2×31232210213011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31232210211011) 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 3 ways as a sum of consecutive naturals, for example, 2884920711 + ... + 2884931536.

It is an arithmetic number, because the mean of its divisors is an integer number (7809495017668).

Almost surely, 2^{31232210213011} is an apocalyptic number.

31232210213011 is a deficient number, since it is larger than the sum of its proper divisors (5769857661).

31232210213011 is an equidigital number, since it uses as much as digits as its factorization.

31232210213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5769857660.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31232210213011 its reverse (11031201223213), we get a palindrome (42263411436224).

The spelling of 31232210213011 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred ten million, two hundred thirteen thousand, eleven".