31231333141 has 2 divisors, whose sum is σ = 31231333142. Its totient is φ = 31231333140.

The previous prime is 31231333039. The next prime is 31231333151. The reversal of 31231333141 is 14133313213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23355480625 + 7875852516 = 152825^2 + 88746^2 .

It is a cyclic number.

It is not a de Polignac number, because 31231333141 - 2²⁵ = 31197778709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231333151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615666570 + 15615666571.

It is an arithmetic number, because the mean of its divisors is an integer number (15615666571).

Almost surely, 2^31231333141 is an apocalyptic number.

It is an amenable number.

31231333141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231333141 is an equidigital number, since it uses as much as digits as its factorization.

31231333141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 25.

Adding to 31231333141 its reverse (14133313213), we get a palindrome (45364646354).

The spelling of 31231333141 in words is "thirty-one billion, two hundred thirty-one million, three hundred thirty-three thousand, one hundred forty-one".