1831400201 has 2 divisors, whose sum is σ = 1831400202. Its totient is φ = 1831400200.

The previous prime is 1831400171. The next prime is 1831400203. The reversal of 1831400201 is 1020041381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1057225225 + 774174976 = 32515^2 + 27824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1831400201 - 2¹⁴ = 1831383817 is a prime.

Together with 1831400203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1831400203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915700100 + 915700101.

It is an arithmetic number, because the mean of its divisors is an integer number (915700101).

Almost surely, 2^1831400201 is an apocalyptic number.

It is an amenable number.

1831400201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1831400201 is an equidigital number, since it uses as much as digits as its factorization.

1831400201 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1831400201 is about 42794.8618527972. The cubic root of 1831400201 is about 1223.4730831908.

Adding to 1831400201 its reverse (1020041381), we get a palindrome (2851441582).

The spelling of 1831400201 in words is "one billion, eight hundred thirty-one million, four hundred thousand, two hundred one".