31213001120023 has 8 divisors (see below), whose sum is σ = 31877375496192. Its totient is φ = 30548637909336.

The previous prime is 31213001120009. The next prime is 31213001120149. The reversal of 31213001120023 is 32002110031213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31213001120023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213001120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2984986 + ... + 8446072.

It is an arithmetic number, because the mean of its divisors is an integer number (3984671937024).

Almost surely, 2^{31213001120023} is an apocalyptic number.

31213001120023 is a deficient number, since it is larger than the sum of its proper divisors (664374376169).

31213001120023 is a wasteful number, since it uses less digits than its factorization.

31213001120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582741.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31213001120023 its reverse (32002110031213), we get a palindrome (63215111151236).

The spelling of 31213001120023 in words is "thirty-one trillion, two hundred thirteen billion, one million, one hundred twenty thousand, twenty-three".