31230323207 has 2 divisors, whose sum is σ = 31230323208. Its totient is φ = 31230323206.

The previous prime is 31230323191. The next prime is 31230323227. The reversal of 31230323207 is 70232303213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31230323207 - 2⁴ = 31230323191 is a prime.

It is a super-2 number, since 2×31230323207² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31230323227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615161603 + 15615161604.

It is an arithmetic number, because the mean of its divisors is an integer number (15615161604).

Almost surely, 2^31230323207 is an apocalyptic number.

31230323207 is a deficient number, since it is larger than the sum of its proper divisors (1).

31230323207 is an equidigital number, since it uses as much as digits as its factorization.

31230323207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 26.

The spelling of 31230323207 in words is "thirty-one billion, two hundred thirty million, three hundred twenty-three thousand, two hundred seven".