31241212209 has 48 divisors (see below), whose sum is σ = 47061181440. Its totient is φ = 19949322240.

The previous prime is 31241212207. The next prime is 31241212229. The reversal of 31241212209 is 90221214213.

31241212209 is a `hidden beast` number, since 3 + 1 + 241 + 212 + 209 = 666.

It is not a de Polignac number, because 31241212209 - 2¹ = 31241212207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31241212207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11973097 + ... + 11975705.

It is an arithmetic number, because the mean of its divisors is an integer number (980441280).

Almost surely, 2^31241212209 is an apocalyptic number.

It is an amenable number.

31241212209 is a deficient number, since it is larger than the sum of its proper divisors (15819969231).

31241212209 is a wasteful number, since it uses less digits than its factorization.

31241212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 31241212209 in words is "thirty-one billion, two hundred forty-one million, two hundred twelve thousand, two hundred nine".