31202140540229 has 2 divisors, whose sum is σ = 31202140540230. Its totient is φ = 31202140540228.

The previous prime is 31202140540183. The next prime is 31202140540247. The reversal of 31202140540229 is 92204504120213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19210706532004 + 11991434008225 = 4383002^2 + 3462865^2 .

It is an emirp because it is prime and its reverse (92204504120213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31202140540229 - 2¹⁶ = 31202140474693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31202140546229) 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, 15601070270114 + 15601070270115.

It is an arithmetic number, because the mean of its divisors is an integer number (15601070270115).

Almost surely, 2^{31202140540229} is an apocalyptic number.

It is an amenable number.

31202140540229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31202140540229 is an equidigital number, since it uses as much as digits as its factorization.

31202140540229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 31202140540229 in words is "thirty-one trillion, two hundred two billion, one hundred forty million, five hundred forty thousand, two hundred twenty-nine".