31203140011 has 2 divisors, whose sum is σ = 31203140012. Its totient is φ = 31203140010.

The previous prime is 31203140009. The next prime is 31203140027. The reversal of 31203140011 is 11004130213.

It is an a-pointer prime, because the next prime (31203140027) can be obtained adding 31203140011 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31203140011 - 2¹ = 31203140009 is a prime.

Together with 31203140009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31203140611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15601570005 + 15601570006.

It is an arithmetic number, because the mean of its divisors is an integer number (15601570006).

Almost surely, 2^31203140011 is an apocalyptic number.

31203140011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31203140011 is an equidigital number, since it uses as much as digits as its factorization.

31203140011 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 16.

Adding to 31203140011 its reverse (11004130213), we get a palindrome (42207270224).

The spelling of 31203140011 in words is "thirty-one billion, two hundred three million, one hundred forty thousand, eleven".