1312020342 has 40 divisors (see below), whose sum is σ = 2975348376. Its totient is φ = 432066528.

The previous prime is 1312020329. The next prime is 1312020361. The reversal of 1312020342 is 2430202131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35343 + ... + 62234.

Almost surely, 2^1312020342 is an apocalyptic number.

1312020342 is an abundant number, since it is smaller than the sum of its proper divisors (1663328034).

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

1312020342 is an equidigital number, since it uses as much as digits as its factorization.

1312020342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97674 (or 97665 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1312020342 is about 36221.8213512242. The cubic root of 1312020342 is about 1094.7463927597.

Adding to 1312020342 its reverse (2430202131), we get a palindrome (3742222473).

The spelling of 1312020342 in words is "one billion, three hundred twelve million, twenty thousand, three hundred forty-two".