31400235241 has 2 divisors, whose sum is σ = 31400235242. Its totient is φ = 31400235240.

The previous prime is 31400235239. The next prime is 31400235323. The reversal of 31400235241 is 14253200413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28567760400 + 2832474841 = 169020^2 + 53221^2 .

It is a cyclic number.

It is not a de Polignac number, because 31400235241 - 2¹ = 31400235239 is a prime.

Together with 31400235239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31400235541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700117620 + 15700117621.

It is an arithmetic number, because the mean of its divisors is an integer number (15700117621).

Almost surely, 2^31400235241 is an apocalyptic number.

It is an amenable number.

31400235241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400235241 is an equidigital number, since it uses as much as digits as its factorization.

31400235241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 31400235241 its reverse (14253200413), we get a palindrome (45653435654).

The spelling of 31400235241 in words is "thirty-one billion, four hundred million, two hundred thirty-five thousand, two hundred forty-one".