1231530235050 has 96 divisors (see below), whose sum is σ = 3059026977600. Its totient is φ = 327889013760.

The previous prime is 1231530235009. The next prime is 1231530235081. The reversal of 1231530235050 is 505320351321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1231530234999 and 1231530235017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 363388756 + ... + 363392144.

It is an arithmetic number, because the mean of its divisors is an integer number (31864864350).

Almost surely, 2^{1231530235050} is an apocalyptic number.

1231530235050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231530235050 is an abundant number, since it is smaller than the sum of its proper divisors (1827496742550).

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

1231530235050 is a wasteful number, since it uses less digits than its factorization.

1231530235050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520 (or 6515 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 1231530235050 its reverse (505320351321), we get a palindrome (1736850586371).

The spelling of 1231530235050 in words is "one trillion, two hundred thirty-one billion, five hundred thirty million, two hundred thirty-five thousand, fifty".