31253131241 has 2 divisors, whose sum is σ = 31253131242. Its totient is φ = 31253131240.

The previous prime is 31253131223. The next prime is 31253131253. The reversal of 31253131241 is 14213135213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16756008025 + 14497123216 = 129445^2 + 120404^2 .

It is a cyclic number.

It is not a de Polignac number, because 31253131241 - 2¹⁸ = 31252869097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31253131241.

It is not a weakly prime, because it can be changed into another prime (31253131201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15626565620 + 15626565621.

It is an arithmetic number, because the mean of its divisors is an integer number (15626565621).

Almost surely, 2^31253131241 is an apocalyptic number.

It is an amenable number.

31253131241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31253131241 is an equidigital number, since it uses as much as digits as its factorization.

31253131241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

Adding to 31253131241 its reverse (14213135213), we get a palindrome (45466266454).

The spelling of 31253131241 in words is "thirty-one billion, two hundred fifty-three million, one hundred thirty-one thousand, two hundred forty-one".