31030001315213 has 4 divisors (see below), whose sum is σ = 31039634972988. Its totient is φ = 31020367657440.

The previous prime is 31030001315167. The next prime is 31030001315233. The reversal of 31030001315213 is 31251310003013.

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 10287241561129 + 20742759754084 = 3207373^2 + 4554422^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030001315213 - 2⁸ = 31030001314957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030001315233) 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 in 3 ways as a sum of consecutive naturals, for example, 4816824056 + ... + 4816830497.

It is an arithmetic number, because the mean of its divisors is an integer number (7759908743247).

Almost surely, 2^{31030001315213} is an apocalyptic number.

It is an amenable number.

31030001315213 is a deficient number, since it is larger than the sum of its proper divisors (9633657775).

31030001315213 is an equidigital number, since it uses as much as digits as its factorization.

31030001315213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633657774.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 31030001315213 its reverse (31251310003013), we get a palindrome (62281311318226).

The spelling of 31030001315213 in words is "thirty-one trillion, thirty billion, one million, three hundred fifteen thousand, two hundred thirteen".