31300007 has 2 divisors, whose sum is σ = 31300008. Its totient is φ = 31300006.

The previous prime is 31299997. The next prime is 31300013. The reversal of 31300007 is 70000313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31300007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31299964 and 31300000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31300067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650003 + 15650004.

It is an arithmetic number, because the mean of its divisors is an integer number (15650004).

Almost surely, 2^31300007 is an apocalyptic number.

31300007 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300007 is an equidigital number, since it uses as much as digits as its factorization.

31300007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 31300007 is about 5594.6409178785. The cubic root of 31300007 is about 315.1481859257.

The spelling of 31300007 in words is "thirty-one million, three hundred thousand, seven".