2431181 has 2 divisors, whose sum is σ = 2431182. Its totient is φ = 2431180.

The previous prime is 2431151. The next prime is 2431189. The reversal of 2431181 is 1811342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681 + 302500 = 1459^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2431181 is a prime.

It is a super-2 number, since 2×2431181² = 11821282109522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215590 + 1215591.

It is an arithmetic number, because the mean of its divisors is an integer number (1215591).

2^2431181 is an apocalyptic number.

It is an amenable number.

2431181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431181 is an equidigital number, since it uses as much as digits as its factorization.

2431181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 2431181 is about 1559.2244867241. The cubic root of 2431181 is about 134.4639188652.

The spelling of 2431181 in words is "two million, four hundred thirty-one thousand, one hundred eighty-one".