31225352273 has 2 divisors, whose sum is σ = 31225352274. Its totient is φ = 31225352272.

The previous prime is 31225352251. The next prime is 31225352321. The reversal of 31225352273 is 37225352213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25905546304 + 5319805969 = 160952^2 + 72937^2 .

It is a cyclic number.

It is not a de Polignac number, because 31225352273 - 2⁶ = 31225352209 is a prime.

It is not a weakly prime, because it can be changed into another prime (31225352173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612676136 + 15612676137.

It is an arithmetic number, because the mean of its divisors is an integer number (15612676137).

Almost surely, 2^31225352273 is an apocalyptic number.

It is an amenable number.

31225352273 is a deficient number, since it is larger than the sum of its proper divisors (1).

31225352273 is an equidigital number, since it uses as much as digits as its factorization.

31225352273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 35.

The spelling of 31225352273 in words is "thirty-one billion, two hundred twenty-five million, three hundred fifty-two thousand, two hundred seventy-three".