712020181 has 2 divisors, whose sum is σ = 712020182. Its totient is φ = 712020180.

The previous prime is 712020157. The next prime is 712020217. The reversal of 712020181 is 181020217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387696100 + 324324081 = 19690^2 + 18009^2 .

It is a cyclic number.

It is not a de Polignac number, because 712020181 - 2⁷ = 712020053 is a prime.

It is a super-2 number, since 2×712020181² = 1013945476302545522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712020481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356010090 + 356010091.

It is an arithmetic number, because the mean of its divisors is an integer number (356010091).

Almost surely, 2^712020181 is an apocalyptic number.

It is an amenable number.

712020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

712020181 is an equidigital number, since it uses as much as digits as its factorization.

712020181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 712020181 is about 26683.7062830485. The cubic root of 712020181 is about 892.9574556496.

Adding to 712020181 its reverse (181020217), we get a palindrome (893040398).

The spelling of 712020181 in words is "seven hundred twelve million, twenty thousand, one hundred eighty-one".