31212130102409 has 2 divisors, whose sum is σ = 31212130102410. Its totient is φ = 31212130102408.

The previous prime is 31212130102369. The next prime is 31212130102463. The reversal of 31212130102409 is 90420103121213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31207641504400 + 4488598009 = 5586380^2 + 66997^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212130102409 - 2¹² = 31212130098313 is a prime.

It is not a weakly prime, because it can be changed into another prime (31212130602409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606065051204 + 15606065051205.

It is an arithmetic number, because the mean of its divisors is an integer number (15606065051205).

Almost surely, 2^{31212130102409} is an apocalyptic number.

It is an amenable number.

31212130102409 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212130102409 is an equidigital number, since it uses as much as digits as its factorization.

31212130102409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 31212130102409 in words is "thirty-one trillion, two hundred twelve billion, one hundred thirty million, one hundred two thousand, four hundred nine".