31234402302209 has 4 divisors (see below), whose sum is σ = 31234435214916. Its totient is φ = 31234369389504.

The previous prime is 31234402302139. The next prime is 31234402302247. The reversal of 31234402302209 is 90220320443213.

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 11425921050625 + 19808481251584 = 3380225^2 + 4450672^2 .

It is a cyclic number.

It is not a de Polignac number, because 31234402302209 - 2⁴⁰ = 30134890674433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234402802209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14989244 + ... + 16945389.

It is an arithmetic number, because the mean of its divisors is an integer number (7808608803729).

Almost surely, 2^{31234402302209} is an apocalyptic number.

It is an amenable number.

31234402302209 is a deficient number, since it is larger than the sum of its proper divisors (32912707).

31234402302209 is an equidigital number, since it uses as much as digits as its factorization.

31234402302209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32912706.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 31234402302209 in words is "thirty-one trillion, two hundred thirty-four billion, four hundred two million, three hundred two thousand, two hundred nine".