1331500361 has 2 divisors, whose sum is σ = 1331500362. Its totient is φ = 1331500360.

The previous prime is 1331500351. The next prime is 1331500393. The reversal of 1331500361 is 1630051331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 898860361 + 432640000 = 29981^2 + 20800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331500361 - 2¹⁸ = 1331238217 is a prime.

It is a super-2 number, since 2×1331500361² = 3545786422686260642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1331500351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665750180 + 665750181.

It is an arithmetic number, because the mean of its divisors is an integer number (665750181).

Almost surely, 2^1331500361 is an apocalyptic number.

It is an amenable number.

1331500361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331500361 is an equidigital number, since it uses as much as digits as its factorization.

1331500361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 1331500361 is about 36489.7295276356. The cubic root of 1331500361 is about 1100.1378232267.

Adding to 1331500361 its reverse (1630051331), we get a palindrome (2961551692).

The spelling of 1331500361 in words is "one billion, three hundred thirty-one million, five hundred thousand, three hundred sixty-one".