31023212111321 has 8 divisors (see below), whose sum is σ = 31194799341888. Its totient is φ = 30851626950000.

The previous prime is 31023212111267. The next prime is 31023212111371. The reversal of 31023212111321 is 12311121232013.

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 31023212111321 - 2¹⁴ = 31023212094937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31023212111371) 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, 37087946 + ... + 37915196.

It is an arithmetic number, because the mean of its divisors is an integer number (3899349917736).

Almost surely, 2^{31023212111321} is an apocalyptic number.

It is an amenable number.

31023212111321 is a deficient number, since it is larger than the sum of its proper divisors (171587230567).

31023212111321 is a wasteful number, since it uses less digits than its factorization.

31023212111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034623.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31023212111321 its reverse (12311121232013), we get a palindrome (43334333343334).

The spelling of 31023212111321 in words is "thirty-one trillion, twenty-three billion, two hundred twelve million, one hundred eleven thousand, three hundred twenty-one".