1230820053 has 4 divisors (see below), whose sum is σ = 1641093408. Its totient is φ = 820546700.

The previous prime is 1230820051. The next prime is 1230820103. The reversal of 1230820053 is 3500280321.

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: 3500280321 = 3 ⋅1166760107.

It is a cyclic number.

It is not a de Polignac number, because 1230820053 - 2¹ = 1230820051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230820051) 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, 205136673 + ... + 205136678.

It is an arithmetic number, because the mean of its divisors is an integer number (410273352).

Almost surely, 2^1230820053 is an apocalyptic number.

It is an amenable number.

1230820053 is a deficient number, since it is larger than the sum of its proper divisors (410273355).

1230820053 is an equidigital number, since it uses as much as digits as its factorization.

1230820053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410273354.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1230820053 is about 35083.0450930360. The cubic root of 1230820053 is about 1071.6793302420.

The spelling of 1230820053 in words is "one billion, two hundred thirty million, eight hundred twenty thousand, fifty-three".