1230403250605 has 4 divisors (see below), whose sum is σ = 1476483900732. Its totient is φ = 984322600480.

The previous prime is 1230403250591. The next prime is 1230403250689. The reversal of 1230403250605 is 5060523040321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 951689998116 + 278713252489 = 975546^2 + 527933^2 .

It is not a de Polignac number, because 1230403250605 - 2²¹ = 1230401153453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123040325056 + ... + 123040325065.

It is an arithmetic number, because the mean of its divisors is an integer number (369120975183).

Almost surely, 2^{1230403250605} is an apocalyptic number.

It is an amenable number.

1230403250605 is a deficient number, since it is larger than the sum of its proper divisors (246080650127).

1230403250605 is an equidigital number, since it uses as much as digits as its factorization.

1230403250605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246080650126.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 1230403250605 its reverse (5060523040321), we get a palindrome (6290926290926).

The spelling of 1230403250605 in words is "one trillion, two hundred thirty billion, four hundred three million, two hundred fifty thousand, six hundred five".