31212000102013 has 2 divisors, whose sum is σ = 31212000102014. Its totient is φ = 31212000102012.

The previous prime is 31212000101999. The next prime is 31212000102047. The reversal of 31212000102013 is 31020100021213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30309572300569 + 902427801444 = 5505413^2 + 949962^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212000102013 - 2⁵ = 31212000101981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212000102713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606000051006 + 15606000051007.

It is an arithmetic number, because the mean of its divisors is an integer number (15606000051007).

Almost surely, 2^{31212000102013} is an apocalyptic number.

It is an amenable number.

31212000102013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212000102013 is an equidigital number, since it uses as much as digits as its factorization.

31212000102013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31212000102013 its reverse (31020100021213), we get a palindrome (62232100123226).

The spelling of 31212000102013 in words is "thirty-one trillion, two hundred twelve billion, one hundred two thousand, thirteen".