1306772231 has 2 divisors, whose sum is σ = 1306772232. Its totient is φ = 1306772230.

The previous prime is 1306772191. The next prime is 1306772237. The reversal of 1306772231 is 1322776031.

It is a strong prime.

It is an emirp because it is prime and its reverse (1322776031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1306772231 - 2²⁶ = 1239663367 is a prime.

It is a super-2 number, since 2×1306772231² = 3415307327425434722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306772237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653386115 + 653386116.

It is an arithmetic number, because the mean of its divisors is an integer number (653386116).

Almost surely, 2^1306772231 is an apocalyptic number.

1306772231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306772231 is an equidigital number, since it uses as much as digits as its factorization.

1306772231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 1306772231 is about 36149.3047097728. The cubic root of 1306772231 is about 1093.2847720867.

The spelling of 1306772231 in words is "one billion, three hundred six million, seven hundred seventy-two thousand, two hundred thirty-one".