31423203241 has 2 divisors, whose sum is σ = 31423203242. Its totient is φ = 31423203240.

The previous prime is 31423203197. The next prime is 31423203263. The reversal of 31423203241 is 14230232413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31389563241 + 33640000 = 177171^2 + 5800^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423203241 - 2¹⁷ = 31423072169 is a prime.

It is not a weakly prime, because it can be changed into another prime (31423203281) 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, 15711601620 + 15711601621.

It is an arithmetic number, because the mean of its divisors is an integer number (15711601621).

Almost surely, 2^31423203241 is an apocalyptic number.

It is an amenable number.

31423203241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423203241 is an equidigital number, since it uses as much as digits as its factorization.

31423203241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31423203241 its reverse (14230232413), we get a palindrome (45653435654).

The spelling of 31423203241 in words is "thirty-one billion, four hundred twenty-three million, two hundred three thousand, two hundred forty-one".