31430230313 has 2 divisors, whose sum is σ = 31430230314. Its totient is φ = 31430230312.

The previous prime is 31430230267. The next prime is 31430230339. The reversal of 31430230313 is 31303203413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29533453609 + 1896776704 = 171853^2 + 43552^2 .

It is a cyclic number.

It is not a de Polignac number, because 31430230313 - 2³⁰ = 30356488489 is a prime.

It is not a weakly prime, because it can be changed into another prime (31430232313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715115156 + 15715115157.

It is an arithmetic number, because the mean of its divisors is an integer number (15715115157).

Almost surely, 2^31430230313 is an apocalyptic number.

It is an amenable number.

31430230313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430230313 is an equidigital number, since it uses as much as digits as its factorization.

31430230313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31430230313 its reverse (31303203413), we get a palindrome (62733433726).

The spelling of 31430230313 in words is "thirty-one billion, four hundred thirty million, two hundred thirty thousand, three hundred thirteen".