31020021211323 has 8 divisors (see below), whose sum is σ = 42368809459536. Its totient is φ = 20175623552000.

The previous prime is 31020021211301. The next prime is 31020021211357. The reversal of 31020021211323 is 32311212002013.

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 31020021211323 - 2⁶ = 31020021211259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31020021211323.

It is not an unprimeable number, because it can be changed into a prime (31020021231323) 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, 126097647078 + ... + 126097647323.

It is an arithmetic number, because the mean of its divisors is an integer number (5296101182442).

Almost surely, 2^{31020021211323} is an apocalyptic number.

31020021211323 is a deficient number, since it is larger than the sum of its proper divisors (11348788248213).

31020021211323 is a wasteful number, since it uses less digits than its factorization.

31020021211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252195294445.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31020021211323 its reverse (32311212002013), we get a palindrome (63331233213336).

The spelling of 31020021211323 in words is "thirty-one trillion, twenty billion, twenty-one million, two hundred eleven thousand, three hundred twenty-three".