1331132401 has 2 divisors, whose sum is σ = 1331132402. Its totient is φ = 1331132400.

The previous prime is 1331132389. The next prime is 1331132441. The reversal of 1331132401 is 1042311331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1278134001 + 52998400 = 35751^2 + 7280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331132401 - 2⁷ = 1331132273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331132441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665566200 + 665566201.

It is an arithmetic number, because the mean of its divisors is an integer number (665566201).

Almost surely, 2^1331132401 is an apocalyptic number.

It is an amenable number.

1331132401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331132401 is an equidigital number, since it uses as much as digits as its factorization.

1331132401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1331132401 is about 36484.6872125828. The cubic root of 1331132401 is about 1100.0364728953.

Adding to 1331132401 its reverse (1042311331), we get a palindrome (2373443732).

The spelling of 1331132401 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, four hundred one".