31100000011 has 4 divisors (see below), whose sum is σ = 31102820224. Its totient is φ = 31097179800.

The previous prime is 31099999991. The next prime is 31100000021. The reversal of 31100000011 is 11000000113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11000000113 = 379 ⋅29023747.

It is a cyclic number.

It is not a de Polignac number, because 31100000011 - 2¹⁷ = 31099868939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100000021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393500 + ... + 1415641.

It is an arithmetic number, because the mean of its divisors is an integer number (7775705056).

Almost surely, 2^31100000011 is an apocalyptic number.

31100000011 is a deficient number, since it is larger than the sum of its proper divisors (2820213).

31100000011 is a wasteful number, since it uses less digits than its factorization.

31100000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820212.

The product of its (nonzero) digits is 3, while the sum is 7.

Adding to 31100000011 its reverse (11000000113), we get a palindrome (42100000124).

It can be divided in two parts, 3 and 1100000011, that multiplied together give a palindrome (3300000033).

The spelling of 31100000011 in words is "thirty-one billion, one hundred million, eleven", and thus it is an aban number.