31233200121993 has 4 divisors (see below), whose sum is σ = 41644266829328. Its totient is φ = 20822133414660.

The previous prime is 31233200121979. The next prime is 31233200122013. The reversal of 31233200121993 is 39912100233213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31233200121993 - 2⁵ = 31233200121961 is a prime.

It is a super-3 number, since 3×31233200121993³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31233200121913) 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 3 ways as a sum of consecutive naturals, for example, 5205533353663 + ... + 5205533353668.

It is an arithmetic number, because the mean of its divisors is an integer number (10411066707332).

Almost surely, 2^{31233200121993} is an apocalyptic number.

It is an amenable number.

31233200121993 is a deficient number, since it is larger than the sum of its proper divisors (10411066707335).

31233200121993 is a wasteful number, since it uses less digits than its factorization.

31233200121993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10411066707334.

The product of its (nonzero) digits is 52488, while the sum is 39.

The spelling of 31233200121993 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred million, one hundred twenty-one thousand, nine hundred ninety-three".