31302343313 has 2 divisors, whose sum is σ = 31302343314. Its totient is φ = 31302343312.

The previous prime is 31302343301. The next prime is 31302343381. The reversal of 31302343313 is 31334320313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31246572289 + 55771024 = 176767^2 + 7468^2 .

It is an emirp because it is prime and its reverse (31334320313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31302343313 - 2⁸ = 31302343057 is a prime.

It is not a weakly prime, because it can be changed into another prime (31302343013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651171656 + 15651171657.

It is an arithmetic number, because the mean of its divisors is an integer number (15651171657).

Almost surely, 2^31302343313 is an apocalyptic number.

It is an amenable number.

31302343313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302343313 is an equidigital number, since it uses as much as digits as its factorization.

31302343313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31302343313 its reverse (31334320313), we get a palindrome (62636663626).

The spelling of 31302343313 in words is "thirty-one billion, three hundred two million, three hundred forty-three thousand, three hundred thirteen".