31200102011 has 16 divisors (see below), whose sum is σ = 33680473344. Its totient is φ = 28731314304.

The previous prime is 31200101953. The next prime is 31200102013. The reversal of 31200102011 is 11020100213.

It is a cyclic number.

It is not a de Polignac number, because 31200102011 - 2²² = 31195907707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31200101983 and 31200102001.

It is not an unprimeable number, because it can be changed into a prime (31200102013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14558006 + ... + 14560148.

It is an arithmetic number, because the mean of its divisors is an integer number (2105029584).

Almost surely, 2^31200102011 is an apocalyptic number.

31200102011 is a deficient number, since it is larger than the sum of its proper divisors (2480371333).

31200102011 is a wasteful number, since it uses less digits than its factorization.

31200102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31200102011 its reverse (11020100213), we get a palindrome (42220202224).

The spelling of 31200102011 in words is "thirty-one billion, two hundred million, one hundred two thousand, eleven".