31048752470209 has 2 divisors, whose sum is σ = 31048752470210. Its totient is φ = 31048752470208.

The previous prime is 31048752470083. The next prime is 31048752470213. The reversal of 31048752470209 is 90207425784013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29917235212225 + 1131517257984 = 5469665^2 + 1063728^2 .

It is a cyclic number.

It is not a de Polignac number, because 31048752470209 - 2⁹ = 31048752469697 is a prime.

It is not a weakly prime, because it can be changed into another prime (31048752470609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15524376235104 + 15524376235105.

It is an arithmetic number, because the mean of its divisors is an integer number (15524376235105).

Almost surely, 2^{31048752470209} is an apocalyptic number.

It is an amenable number.

31048752470209 is a deficient number, since it is larger than the sum of its proper divisors (1).

31048752470209 is an equidigital number, since it uses as much as digits as its factorization.

31048752470209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 31048752470209 in words is "thirty-one trillion, forty-eight billion, seven hundred fifty-two million, four hundred seventy thousand, two hundred nine".