1230255653 has 4 divisors (see below), whose sum is σ = 1342097088. Its totient is φ = 1118414220.

The previous prime is 1230255647. The next prime is 1230255673. The reversal of 1230255653 is 3565520321.

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: 3565520321 = 11 ⋅324138211.

It is not a de Polignac number, because 1230255653 - 2¹⁰ = 1230254629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230255673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55920701 + ... + 55920722.

It is an arithmetic number, because the mean of its divisors is an integer number (335524272).

Almost surely, 2^1230255653 is an apocalyptic number.

It is an amenable number.

1230255653 is a deficient number, since it is larger than the sum of its proper divisors (111841435).

1230255653 is a wasteful number, since it uses less digits than its factorization.

1230255653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111841434.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 1230255653 is about 35075.0003991447. Note that the first 3 decimals coincide. The cubic root of 1230255653 is about 1071.5154968451.

Adding to 1230255653 its reverse (3565520321), we get a palindrome (4795775974).

The spelling of 1230255653 in words is "one billion, two hundred thirty million, two hundred fifty-five thousand, six hundred fifty-three".