1051243313 has 8 divisors (see below), whose sum is σ = 1120290048. Its totient is φ = 984141664.

The previous prime is 1051243307. The next prime is 1051243351. The reversal of 1051243313 is 3133421501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1051243313 - 2¹⁰ = 1051242289 is a prime.

It is a super-2 number, since 2×1051243313² = 2210225006254431938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051243373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485156 + ... + 487317.

It is an arithmetic number, because the mean of its divisors is an integer number (140036256).

Almost surely, 2^1051243313 is an apocalyptic number.

It is an amenable number.

1051243313 is a deficient number, since it is larger than the sum of its proper divisors (69046735).

1051243313 is an equidigital number, since it uses as much as digits as its factorization.

1051243313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972543.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1051243313 is about 32422.8825522963. The cubic root of 1051243313 is about 1016.7973727978.

Adding to 1051243313 its reverse (3133421501), we get a palindrome (4184664814).

The spelling of 1051243313 in words is "one billion, fifty-one million, two hundred forty-three thousand, three hundred thirteen".