1331970041 has 2 divisors, whose sum is σ = 1331970042. Its totient is φ = 1331970040.

The previous prime is 1331970037. The next prime is 1331970061. The reversal of 1331970041 is 1400791331.

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., 1322849641 + 9120400 = 36371^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331970041 - 2² = 1331970037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331969986 and 1331970013.

It is not a weakly prime, because it can be changed into another prime (1331970061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665985020 + 665985021.

It is an arithmetic number, because the mean of its divisors is an integer number (665985021).

Almost surely, 2^1331970041 is an apocalyptic number.

It is an amenable number.

1331970041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331970041 is an equidigital number, since it uses as much as digits as its factorization.

1331970041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 1331970041 is about 36496.1647437097. The cubic root of 1331970041 is about 1100.2671640325.

The spelling of 1331970041 in words is "one billion, three hundred thirty-one million, nine hundred seventy thousand, forty-one".