31330000313 has 8 divisors (see below), whose sum is σ = 31417506696. Its totient is φ = 31242556800.

The previous prime is 31330000307. The next prime is 31330000319. The reversal of 31330000313 is 31300003313.

It is an interprime number because it is at equal distance from previous prime (31330000307) and next prime (31330000319).

It can be written as a sum of positive squares in 4 ways, for example, as 7900187689 + 23429812624 = 88883^2 + 153068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31330000313 - 2⁸ = 31330000057 is a prime.

It is a super-2 number, since 2×31330000313² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31330000291 and 31330000300.

It is not an unprimeable number, because it can be changed into a prime (31330000319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089245 + ... + 1117637.

It is an arithmetic number, because the mean of its divisors is an integer number (3927188337).

Almost surely, 2^31330000313 is an apocalyptic number.

It is an amenable number.

31330000313 is a deficient number, since it is larger than the sum of its proper divisors (87506383).

31330000313 is a wasteful number, since it uses less digits than its factorization.

31330000313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435.

The product of its (nonzero) digits is 243, while the sum is 17.

Adding to 31330000313 its reverse (31300003313), we get a palindrome (62630003626).

The spelling of 31330000313 in words is "thirty-one billion, three hundred thirty million, three hundred thirteen", and thus it is an aban number.