31020102131011 has 16 divisors (see below), whose sum is σ = 36276822106624. Its totient is φ = 25969729391424.

The previous prime is 31020102130987. The next prime is 31020102131027. The reversal of 31020102131011 is 11013120102013.

It is a happy number.

It is not a de Polignac number, because 31020102131011 - 2³⁷ = 30882663177539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020102134011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12394375 + ... + 14685391.

It is an arithmetic number, because the mean of its divisors is an integer number (2267301381664).

Almost surely, 2^{31020102131011} is an apocalyptic number.

31020102131011 is a deficient number, since it is larger than the sum of its proper divisors (5256719975613).

31020102131011 is a wasteful number, since it uses less digits than its factorization.

31020102131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336050.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31020102131011 its reverse (11013120102013), we get a palindrome (42033222233024).

The spelling of 31020102131011 in words is "thirty-one trillion, twenty billion, one hundred two million, one hundred thirty-one thousand, eleven".