31012200313 has 2 divisors, whose sum is σ = 31012200314. Its totient is φ = 31012200312.

The previous prime is 31012200301. The next prime is 31012200341. The reversal of 31012200313 is 31300221013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27255368464 + 3756831849 = 165092^2 + 61293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31012200313 is a prime.

It is not a weakly prime, because it can be changed into another prime (31012200353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506100156 + 15506100157.

It is an arithmetic number, because the mean of its divisors is an integer number (15506100157).

Almost surely, 2^31012200313 is an apocalyptic number.

It is an amenable number.

31012200313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012200313 is an equidigital number, since it uses as much as digits as its factorization.

31012200313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31012200313 its reverse (31300221013), we get a palindrome (62312421326).

The spelling of 31012200313 in words is "thirty-one billion, twelve million, two hundred thousand, three hundred thirteen".