1312130450 has 24 divisors (see below), whose sum is σ = 2546676288. Its totient is φ = 502032080.

The previous prime is 1312130447. The next prime is 1312130467. The reversal of 1312130450 is 540312131.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569342 + ... + 571641.

It is an arithmetic number, because the mean of its divisors is an integer number (106111512).

Almost surely, 2^1312130450 is an apocalyptic number.

1312130450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312130450 is a deficient number, since it is larger than the sum of its proper divisors (1234545838).

1312130450 is a wasteful number, since it uses less digits than its factorization.

1312130450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141018 (or 1141013 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1312130450 is about 36223.3412318632. The cubic root of 1312130450 is about 1094.7770165136. Note that the first 3 decimals are identical.

Adding to 1312130450 its reverse (540312131), we get a palindrome (1852442581).

The spelling of 1312130450 in words is "one billion, three hundred twelve million, one hundred thirty thousand, four hundred fifty".