31320231203 has 2 divisors, whose sum is σ = 31320231204. Its totient is φ = 31320231202.

The previous prime is 31320231149. The next prime is 31320231221. The reversal of 31320231203 is 30213202313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31320231203 - 2⁸ = 31320230947 is a prime.

It is not a weakly prime, because it can be changed into another prime (31320234203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660115601 + 15660115602.

It is an arithmetic number, because the mean of its divisors is an integer number (15660115602).

Almost surely, 2^31320231203 is an apocalyptic number.

31320231203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320231203 is an equidigital number, since it uses as much as digits as its factorization.

31320231203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31320231203 its reverse (30213202313), we get a palindrome (61533433516).

The spelling of 31320231203 in words is "thirty-one billion, three hundred twenty million, two hundred thirty-one thousand, two hundred three".