1312403330 has 32 divisors (see below), whose sum is σ = 2703476736. Its totient is φ = 449354304.

The previous prime is 1312403329. The next prime is 1312403333. The reversal of 1312403330 is 333042131.

It is not an unprimeable number, because it can be changed into a prime (1312403333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40607 + ... + 65373.

It is an arithmetic number, because the mean of its divisors is an integer number (84483648).

Almost surely, 2^1312403330 is an apocalyptic number.

1312403330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312403330 is an abundant number, since it is smaller than the sum of its proper divisors (1391073406).

1312403330 is a wasteful number, since it uses less digits than its factorization.

1312403330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25538.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1312403330 is about 36227.1076681537. The cubic root of 1312403330 is about 1094.8529037967.

Adding to 1312403330 its reverse (333042131), we get a palindrome (1645445461).

The spelling of 1312403330 in words is "one billion, three hundred twelve million, four hundred three thousand, three hundred thirty".