700000031 has 2 divisors, whose sum is σ = 700000032. Its totient is φ = 700000030.

The previous prime is 700000001. The next prime is 700000069. The reversal of 700000031 is 130000007.

It is a weak prime.

It is an emirp because it is prime and its reverse (130000007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 700000031 - 2²² = 695805727 is a prime.

It is a super-2 number, since 2×700000031² = 980000086800001922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 699999958 and 700000021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (700000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350000015 + 350000016.

It is an arithmetic number, because the mean of its divisors is an integer number (350000016).

Almost surely, 2^700000031 is an apocalyptic number.

700000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

700000031 is an equidigital number, since it uses as much as digits as its factorization.

700000031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 700000031 is about 26457.5136964908. The cubic root of 700000031 is about 887.9040148498.

Adding to 700000031 its reverse (130000007), we get a palindrome (830000038).

The spelling of 700000031 in words is "seven hundred million, thirty-one", and thus it is an aban number.