31100220229 has 4 divisors (see below), whose sum is σ = 33492544876. Its totient is φ = 28707895584.

The previous prime is 31100220227. The next prime is 31100220287. The reversal of 31100220229 is 92202200113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10712664004 + 20387556225 = 103502^2 + 142785^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100220229 - 2¹ = 31100220227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100220227) 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, 1196162304 + ... + 1196162329.

It is an arithmetic number, because the mean of its divisors is an integer number (8373136219).

Almost surely, 2^31100220229 is an apocalyptic number.

It is an amenable number.

31100220229 is a deficient number, since it is larger than the sum of its proper divisors (2392324647).

31100220229 is a wasteful number, since it uses less digits than its factorization.

31100220229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392324646.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 31100220229 in words is "thirty-one billion, one hundred million, two hundred twenty thousand, two hundred twenty-nine".