1210231240 has 16 divisors (see below), whose sum is σ = 2723020380. Its totient is φ = 484092480.

The previous prime is 1210231229. The next prime is 1210231283. The reversal of 1210231240 is 421320121.

It can be written as a sum of positive squares in 2 ways, for example, as 1203951204 + 6280036 = 34698^2 + 2506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15127851 + ... + 15127930.

Almost surely, 2^1210231240 is an apocalyptic number.

1210231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210231240 is an abundant number, since it is smaller than the sum of its proper divisors (1512789140).

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

1210231240 is a wasteful number, since it uses less digits than its factorization.

1210231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30255792 (or 30255788 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1210231240 is about 34788.3779443653. The cubic root of 1210231240 is about 1065.6701139473.

Adding to 1210231240 its reverse (421320121), we get a palindrome (1631551361).

The spelling of 1210231240 in words is "one billion, two hundred ten million, two hundred thirty-one thousand, two hundred forty".