1240200331 has 2 divisors, whose sum is σ = 1240200332. Its totient is φ = 1240200330.

The previous prime is 1240200317. The next prime is 1240200361. The reversal of 1240200331 is 1330020421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240200331 - 2¹¹ = 1240198283 is a prime.

It is a super-2 number, since 2×1240200331² = 3076193722025019122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1240200361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620100165 + 620100166.

It is an arithmetic number, because the mean of its divisors is an integer number (620100166).

Almost surely, 2^1240200331 is an apocalyptic number.

1240200331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240200331 is an equidigital number, since it uses as much as digits as its factorization.

1240200331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1240200331 is about 35216.4781174949. The cubic root of 1240200331 is about 1074.3949235241.

Adding to 1240200331 its reverse (1330020421), we get a palindrome (2570220752).

The spelling of 1240200331 in words is "one billion, two hundred forty million, two hundred thousand, three hundred thirty-one".