31010011211 has 12 divisors (see below), whose sum is σ = 32434896648. Its totient is φ = 29645277024.

The previous prime is 31010011187. The next prime is 31010011213. The reversal of 31010011211 is 11211001013.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-31010011211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31010011192 and 31010011201.

It is not an unprimeable number, because it can be changed into a prime (31010011213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 996656 + ... + 1027298.

It is an arithmetic number, because the mean of its divisors is an integer number (2702908054).

Almost surely, 2^31010011211 is an apocalyptic number.

31010011211 is a deficient number, since it is larger than the sum of its proper divisors (1424885437).

31010011211 is a wasteful number, since it uses less digits than its factorization.

31010011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32602 (or 32579 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 31010011211 its reverse (11211001013), we get a palindrome (42221012224).

The spelling of 31010011211 in words is "thirty-one billion, ten million, eleven thousand, two hundred eleven".