1230531306444 has 60 divisors (see below), whose sum is σ = 3509292995208. Its totient is φ = 372888273600.

The previous prime is 1230531306437. The next prime is 1230531306491. The reversal of 1230531306444 is 4446031350321.

1230531306444 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 5 + 3 + 1 + 3 + 0 + 644 + 4 = 666.

It is a super-2 number, since 2×1230531306444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1230531306399 and 1230531306408.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 172629897 + ... + 172637024.

Almost surely, 2^{1230531306444} is an apocalyptic number.

It is an amenable number.

1230531306444 is an abundant number, since it is smaller than the sum of its proper divisors (2278761688764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230531306444 is a wasteful number, since it uses less digits than its factorization.

1230531306444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345266948 (or 345266937 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 1230531306444 its reverse (4446031350321), we get a palindrome (5676562656765).

The spelling of 1230531306444 in words is "one trillion, two hundred thirty billion, five hundred thirty-one million, three hundred six thousand, four hundred forty-four".