31231120121133 has 8 divisors (see below), whose sum is σ = 41642829096096. Its totient is φ = 20820078946800.

The previous prime is 31231120121129. The next prime is 31231120121161. The reversal of 31231120121133 is 33112102113213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31231120121133 - 2² = 31231120121129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231120161133) 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, 166841023 + ... + 167028108.

It is an arithmetic number, because the mean of its divisors is an integer number (5205353637012).

Almost surely, 2^{31231120121133} is an apocalyptic number.

It is an amenable number.

31231120121133 is a deficient number, since it is larger than the sum of its proper divisors (10411708974963).

31231120121133 is a wasteful number, since it uses less digits than its factorization.

31231120121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333900315.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31231120121133 its reverse (33112102113213), we get a palindrome (64343222234346).

The spelling of 31231120121133 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred thirty-three".