31321122011 has 8 divisors (see below), whose sum is σ = 31803677520. Its totient is φ = 30839010048.

The previous prime is 31321121977. The next prime is 31321122059. The reversal of 31321122011 is 11022112313.

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 31321122011 - 2³⁰ = 30247380187 is a prime.

It is a super-3 number, since 3×31321122011³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321122311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32855 + ... + 252431.

It is an arithmetic number, because the mean of its divisors is an integer number (3975459690).

Almost surely, 2^31321122011 is an apocalyptic number.

31321122011 is a deficient number, since it is larger than the sum of its proper divisors (482555509).

31321122011 is a wasteful number, since it uses less digits than its factorization.

31321122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221773.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31321122011 its reverse (11022112313), we get a palindrome (42343234324).

The spelling of 31321122011 in words is "thirty-one billion, three hundred twenty-one million, one hundred twenty-two thousand, eleven".