31220233223133 has 16 divisors (see below), whose sum is σ = 41736174575616. Its totient is φ = 20758891673520.

The previous prime is 31220233223119. The next prime is 31220233223147. The reversal of 31220233223133 is 33132233202213.

It is an interprime number because it is at equal distance from previous prime (31220233223119) and next prime (31220233223147).

It is not a de Polignac number, because 31220233223133 - 2⁴² = 26822186712029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31220233223133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220233224133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167121766 + ... + 167308472.

It is an arithmetic number, because the mean of its divisors is an integer number (2608510910976).

Almost surely, 2^{31220233223133} is an apocalyptic number.

It is an amenable number.

31220233223133 is a deficient number, since it is larger than the sum of its proper divisors (10515941352483).

31220233223133 is a wasteful number, since it uses less digits than its factorization.

31220233223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332624.

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 31220233223133 its reverse (33132233202213), we get a palindrome (64352466425346).

The spelling of 31220233223133 in words is "thirty-one trillion, two hundred twenty billion, two hundred thirty-three million, two hundred twenty-three thousand, one hundred thirty-three".