1051291317 has 4 divisors (see below), whose sum is σ = 1401721760. Its totient is φ = 700860876.

The previous prime is 1051291303. The next prime is 1051291343. The reversal of 1051291317 is 7131921501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7131921501 = 3 ⋅2377307167.

It is not a de Polignac number, because 1051291317 - 2¹⁶ = 1051225781 is a prime.

It is a super-2 number, since 2×1051291317² = 2210426866399188978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051291387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175215217 + ... + 175215222.

It is an arithmetic number, because the mean of its divisors is an integer number (350430440).

Almost surely, 2^1051291317 is an apocalyptic number.

It is an amenable number.

1051291317 is a deficient number, since it is larger than the sum of its proper divisors (350430443).

1051291317 is an equidigital number, since it uses as much as digits as its factorization.

1051291317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350430442.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 1051291317 is about 32423.6228234909. The cubic root of 1051291317 is about 1016.8128495822.

The spelling of 1051291317 in words is "one billion, fifty-one million, two hundred ninety-one thousand, three hundred seventeen".