3240402202181 has 2 divisors, whose sum is σ = 3240402202182. Its totient is φ = 3240402202180.

The previous prime is 3240402202127. The next prime is 3240402202211. The reversal of 3240402202181 is 1812022040423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3238452184900 + 1950017281 = 1799570^2 + 44159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3240402202181 is a prime.

It is a super-2 number, since 2×3240402202181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3240402202111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620201101090 + 1620201101091.

It is an arithmetic number, because the mean of its divisors is an integer number (1620201101091).

Almost surely, 2^{3240402202181} is an apocalyptic number.

It is an amenable number.

3240402202181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240402202181 is an equidigital number, since it uses as much as digits as its factorization.

3240402202181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 3240402202181 in words is "three trillion, two hundred forty billion, four hundred two million, two hundred two thousand, one hundred eighty-one".