31011320011 has 8 divisors (see below), whose sum is σ = 35658942464. Its totient is φ = 26418056040.

The previous prime is 31011319961. The next prime is 31011320033. The reversal of 31011320011 is 11002311013.

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 31011320011 - 2¹⁵ = 31011287243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31011319973 and 31011320000.

It is not an unprimeable number, because it can be changed into a prime (31011320911) 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, 13588395 + ... + 13590676.

It is an arithmetic number, because the mean of its divisors is an integer number (4457367808).

Almost surely, 2^31011320011 is an apocalyptic number.

31011320011 is a deficient number, since it is larger than the sum of its proper divisors (4647622453).

31011320011 is a wasteful number, since it uses less digits than its factorization.

31011320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27179241.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31011320011 its reverse (11002311013), we get a palindrome (42013631024).

The spelling of 31011320011 in words is "thirty-one billion, eleven million, three hundred twenty thousand, eleven".