31321111001011 has 32 divisors (see below), whose sum is σ = 35883524275200. Its totient is φ = 27099064252800.

The previous prime is 31321111001003. The next prime is 31321111001069. The reversal of 31321111001011 is 11010011112313.

It is a cyclic number.

It is not a de Polignac number, because 31321111001011 - 2³ = 31321111001003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31321111031011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33643330 + ... + 34561768.

It is an arithmetic number, because the mean of its divisors is an integer number (1121360133600).

Almost surely, 2^{31321111001011} is an apocalyptic number.

31321111001011 is a deficient number, since it is larger than the sum of its proper divisors (4562413274189).

31321111001011 is a wasteful number, since it uses less digits than its factorization.

31321111001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919939.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 31321111001011 its reverse (11010011112313), we get a palindrome (42331122113324).

The spelling of 31321111001011 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred eleven million, one thousand, eleven".