31233001221011 has 8 divisors (see below), whose sum is σ = 31525413663744. Its totient is φ = 30940598319880.

The previous prime is 31233001220983. The next prime is 31233001221083. The reversal of 31233001221011 is 11012210033213.

It is a happy number.

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 31233001221011 - 2²⁶ = 31232934112147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31233001221091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4278686 + ... + 8987388.

It is an arithmetic number, because the mean of its divisors is an integer number (3940676707968).

Almost surely, 2^{31233001221011} is an apocalyptic number.

31233001221011 is a deficient number, since it is larger than the sum of its proper divisors (292412442733).

31233001221011 is a wasteful number, since it uses less digits than its factorization.

31233001221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770801.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31233001221011 its reverse (11012210033213), we get a palindrome (42245211254224).

The spelling of 31233001221011 in words is "thirty-one trillion, two hundred thirty-three billion, one million, two hundred twenty-one thousand, eleven".