1351056397 has 2 divisors, whose sum is σ = 1351056398. Its totient is φ = 1351056396.

The previous prime is 1351056361. The next prime is 1351056467. The reversal of 1351056397 is 7936501531.

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., 970260201 + 380796196 = 31149^2 + 19514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351056397 - 2⁷ = 1351056269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351056097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675528198 + 675528199.

It is an arithmetic number, because the mean of its divisors is an integer number (675528199).

Almost surely, 2^1351056397 is an apocalyptic number.

It is an amenable number.

1351056397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351056397 is an equidigital number, since it uses as much as digits as its factorization.

1351056397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 1351056397 is about 36756.7190728444. The cubic root of 1351056397 is about 1105.4976558982.

The spelling of 1351056397 in words is "one billion, three hundred fifty-one million, fifty-six thousand, three hundred ninety-seven".