31023200011211 has 2 divisors, whose sum is σ = 31023200011212. Its totient is φ = 31023200011210.

The previous prime is 31023200011099. The next prime is 31023200011249. The reversal of 31023200011211 is 11211000232013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023200011211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023200011211.

It is not a weakly prime, because it can be changed into another prime (31023200311211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511600005605 + 15511600005606.

It is an arithmetic number, because the mean of its divisors is an integer number (15511600005606).

Almost surely, 2^{31023200011211} is an apocalyptic number.

31023200011211 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023200011211 is an equidigital number, since it uses as much as digits as its factorization.

31023200011211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31023200011211 its reverse (11211000232013), we get a palindrome (42234200243224).

The spelling of 31023200011211 in words is "thirty-one trillion, twenty-three billion, two hundred million, eleven thousand, two hundred eleven".