1312240450 has 12 divisors (see below), whose sum is σ = 2440767330. Its totient is φ = 524896160.

The previous prime is 1312240441. The next prime is 1312240469. The reversal of 1312240450 is 540422131.

It can be written as a sum of positive squares in 3 ways, for example, as 868421961 + 443818489 = 29469^2 + 21067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13122355 + ... + 13122454.

Almost surely, 2^1312240450 is an apocalyptic number.

1312240450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312240450 is a deficient number, since it is larger than the sum of its proper divisors (1128526880).

1312240450 is a wasteful number, since it uses less digits than its factorization.

1312240450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26244821 (or 26244816 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1312240450 is about 36224.8595580438. The cubic root of 1312240450 is about 1094.8076085193.

Adding to 1312240450 its reverse (540422131), we get a palindrome (1852662581).

The spelling of 1312240450 in words is "one billion, three hundred twelve million, two hundred forty thousand, four hundred fifty".