1230051313 has 4 divisors (see below), whose sum is σ = 1230133108. Its totient is φ = 1229969520.

The previous prime is 1230051311. The next prime is 1230051323. The reversal of 1230051313 is 3131500321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 202977009 + 1027074304 = 14247^2 + 32048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230051313 - 2¹ = 1230051311 is a prime.

It is a super-2 number, since 2×1230051313² = 3026052465226047938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230051311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11106 + ... + 50827.

It is an arithmetic number, because the mean of its divisors is an integer number (307533277).

Almost surely, 2^1230051313 is an apocalyptic number.

It is an amenable number.

1230051313 is a deficient number, since it is larger than the sum of its proper divisors (81795).

1230051313 is an equidigital number, since it uses as much as digits as its factorization.

1230051313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81794.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1230051313 is about 35072.0873772862. The cubic root of 1230051313 is about 1071.4561689052.

Adding to 1230051313 its reverse (3131500321), we get a palindrome (4361551634).

The spelling of 1230051313 in words is "one billion, two hundred thirty million, fifty-one thousand, three hundred thirteen".