31332001313 has 2 divisors, whose sum is σ = 31332001314. Its totient is φ = 31332001312.

The previous prime is 31332001301. The next prime is 31332001333. The reversal of 31332001313 is 31310023313.

It is an a-pointer prime, because the next prime (31332001333) can be obtained adding 31332001313 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23305991569 + 8026009744 = 152663^2 + 89588^2 .

It is a cyclic number.

It is not a de Polignac number, because 31332001313 - 2⁴ = 31332001297 is a prime.

It is not a weakly prime, because it can be changed into another prime (31332001333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15666000656 + 15666000657.

It is an arithmetic number, because the mean of its divisors is an integer number (15666000657).

Almost surely, 2^31332001313 is an apocalyptic number.

It is an amenable number.

31332001313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31332001313 is an equidigital number, since it uses as much as digits as its factorization.

31332001313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31332001313 its reverse (31310023313), we get a palindrome (62642024626).

The spelling of 31332001313 in words is "thirty-one billion, three hundred thirty-two million, one thousand, three hundred thirteen".