31130133209 has 24 divisors (see below), whose sum is σ = 36593638848. Its totient is φ = 26402634720.

The previous prime is 31130133179. The next prime is 31130133283. The reversal of 31130133209 is 90233103113.

It is not a de Polignac number, because 31130133209 - 2²⁸ = 30861697753 is a prime.

It is a super-2 number, since 2×31130133209² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130133809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12298274 + ... + 12300804.

It is an arithmetic number, because the mean of its divisors is an integer number (1524734952).

Almost surely, 2^31130133209 is an apocalyptic number.

It is an amenable number.

31130133209 is a deficient number, since it is larger than the sum of its proper divisors (5463505639).

31130133209 is a wasteful number, since it uses less digits than its factorization.

31130133209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 26.

The spelling of 31130133209 in words is "thirty-one billion, one hundred thirty million, one hundred thirty-three thousand, two hundred nine".