1230331421 has 4 divisors (see below), whose sum is σ = 1342179744. Its totient is φ = 1118483100.

The previous prime is 1230331397. The next prime is 1230331439. The reversal of 1230331421 is 1241330321.

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.

It is a cyclic number.

It is not a de Polignac number, because 1230331421 - 2¹⁸ = 1230069277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230331393 and 1230331402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230331451) 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, 55924145 + ... + 55924166.

It is an arithmetic number, because the mean of its divisors is an integer number (335544936).

Almost surely, 2^1230331421 is an apocalyptic number.

1230331421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230331421 is a deficient number, since it is larger than the sum of its proper divisors (111848323).

1230331421 is a wasteful number, since it uses less digits than its factorization.

1230331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111848322.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1230331421 is about 35076.0804680341. The cubic root of 1230331421 is about 1071.5374936063.

Adding to 1230331421 its reverse (1241330321), we get a palindrome (2471661742).

The spelling of 1230331421 in words is "one billion, two hundred thirty million, three hundred thirty-one thousand, four hundred twenty-one".