1319261 has 2 divisors, whose sum is σ = 1319262. Its totient is φ = 1319260.

The previous prime is 1319209. The next prime is 1319273. The reversal of 1319261 is 1629131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 280900 = 1019^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319261 - 2¹⁸ = 1057117 is a prime.

It is a super-2 number, since 2×1319261² = 3480899172242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659630 + 659631.

It is an arithmetic number, because the mean of its divisors is an integer number (659631).

2^1319261 is an apocalyptic number.

It is an amenable number.

1319261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319261 is an equidigital number, since it uses as much as digits as its factorization.

1319261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 1319261 is about 1148.5908758126. The cubic root of 1319261 is about 109.6756561563.

The spelling of 1319261 in words is "one million, three hundred nineteen thousand, two hundred sixty-one".