31213212011033 has 16 divisors (see below), whose sum is σ = 33943550449536. Its totient is φ = 28529968556160.

The previous prime is 31213212010999. The next prime is 31213212011081. The reversal of 31213212011033 is 33011021231213.

It is a cyclic number.

It is not a de Polignac number, because 31213212011033 - 2²² = 31213207816729 is a prime.

It is a super-2 number, since 2×31213212011033² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31213212011833) 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 15 ways as a sum of consecutive naturals, for example, 14372141 + ... + 16400757.

It is an arithmetic number, because the mean of its divisors is an integer number (2121471903096).

Almost surely, 2^{31213212011033} is an apocalyptic number.

It is an amenable number.

31213212011033 is a deficient number, since it is larger than the sum of its proper divisors (2730338438503).

31213212011033 is a wasteful number, since it uses less digits than its factorization.

31213212011033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040224.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31213212011033 its reverse (33011021231213), we get a palindrome (64224233242246).

The spelling of 31213212011033 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twelve million, eleven thousand, thirty-three".