31020000011 has 64 divisors (see below), whose sum is σ = 44705074176. Its totient is φ = 20711116800.

The previous prime is 31019999993. The next prime is 31020000041. The reversal of 31020000011 is 11000002013.

It is not a de Polignac number, because 31020000011 - 2⁶ = 31019999947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31020000041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1229756 + ... + 1254726.

It is an arithmetic number, because the mean of its divisors is an integer number (698516784).

Almost surely, 2^31020000011 is an apocalyptic number.

31020000011 is a deficient number, since it is larger than the sum of its proper divisors (13685074165).

31020000011 is a wasteful number, since it uses less digits than its factorization.

31020000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25092.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 31020000011 its reverse (11000002013), we get a palindrome (42020002024).

The spelling of 31020000011 in words is "thirty-one billion, twenty million, eleven", and thus it is an aban number and an uban number.