1331013097 has 2 divisors, whose sum is σ = 1331013098. Its totient is φ = 1331013096.

The previous prime is 1331013077. The next prime is 1331013121. The reversal of 1331013097 is 7903101331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1268855641 + 62157456 = 35621^2 + 7884^2 .

It is an emirp because it is prime and its reverse (7903101331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331013097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331013007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665506548 + 665506549.

It is an arithmetic number, because the mean of its divisors is an integer number (665506549).

Almost surely, 2^1331013097 is an apocalyptic number.

1331013097 is the 21064-th hex number.

It is an amenable number.

1331013097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331013097 is an equidigital number, since it uses as much as digits as its factorization.

1331013097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 1331013097 is about 36483.0521886533. The cubic root of 1331013097 is about 1100.0036079771.

The spelling of 1331013097 in words is "one billion, three hundred thirty-one million, thirteen thousand, ninety-seven".