1312031420 has 48 divisors (see below), whose sum is σ = 3170059200. Its totient is φ = 446813184.

The previous prime is 1312031419. The next prime is 1312031443. The reversal of 1312031420 is 241302131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10589 + ... + 52308.

It is an arithmetic number, because the mean of its divisors is an integer number (66042900).

Almost surely, 2^1312031420 is an apocalyptic number.

1312031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312031420 is an abundant number, since it is smaller than the sum of its proper divisors (1858027780).

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

1312031420 is a wasteful number, since it uses less digits than its factorization.

1312031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63062 (or 63060 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1312031420 is about 36221.9742697717. The cubic root of 1312031420 is about 1094.7494739026.

Adding to 1312031420 its reverse (241302131), we get a palindrome (1553333551).

The spelling of 1312031420 in words is "one billion, three hundred twelve million, thirty-one thousand, four hundred twenty".