1302001397 has 2 divisors, whose sum is σ = 1302001398. Its totient is φ = 1302001396.

The previous prime is 1302001373. The next prime is 1302001427. The reversal of 1302001397 is 7931002031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734084836 + 567916561 = 27094^2 + 23831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302001397 - 2²⁸ = 1033565941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302001357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651000698 + 651000699.

It is an arithmetic number, because the mean of its divisors is an integer number (651000699).

Almost surely, 2^1302001397 is an apocalyptic number.

It is an amenable number.

1302001397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302001397 is an equidigital number, since it uses as much as digits as its factorization.

1302001397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 1302001397 is about 36083.2564633515. The cubic root of 1302001397 is about 1091.9526754863.

The spelling of 1302001397 in words is "one billion, three hundred two million, one thousand, three hundred ninety-seven".