1312024020 has 24 divisors (see below), whose sum is σ = 3673667424. Its totient is φ = 349873056.

The previous prime is 1312023989. The next prime is 1312024039. The reversal of 1312024020 is 204202131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10933474 + ... + 10933593.

It is an arithmetic number, because the mean of its divisors is an integer number (153069476).

Almost surely, 2^1312024020 is an apocalyptic number.

1312024020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312024020 is an abundant number, since it is smaller than the sum of its proper divisors (2361643404).

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

1312024020 is a wasteful number, since it uses less digits than its factorization.

1312024020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21867079 (or 21867077 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1312024020 is about 36221.8721216891. The cubic root of 1312024020 is about 1094.7474157300.

Adding to 1312024020 its reverse (204202131), we get a palindrome (1516226151).

The spelling of 1312024020 in words is "one billion, three hundred twelve million, twenty-four thousand, twenty".