31023000011 has 4 divisors (see below), whose sum is σ = 31307614800. Its totient is φ = 30738385224.

The previous prime is 31022999993. The next prime is 31023000023. The reversal of 31023000011 is 11000032013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31023000011 - 2²⁶ = 30955891147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31022999956 and 31023000001.

It is not an unprimeable number, because it can be changed into a prime (31023000091) 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, 142307231 + ... + 142307448.

It is an arithmetic number, because the mean of its divisors is an integer number (7826903700).

Almost surely, 2^31023000011 is an apocalyptic number.

31023000011 is a deficient number, since it is larger than the sum of its proper divisors (284614789).

31023000011 is a wasteful number, since it uses less digits than its factorization.

31023000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284614788.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 31023000011 its reverse (11000032013), we get a palindrome (42023032024).

The spelling of 31023000011 in words is "thirty-one billion, twenty-three million, eleven", and thus it is an aban number and an uban number.