1312531342 has 16 divisors (see below), whose sum is σ = 2085445440. Its totient is φ = 617413888.

The previous prime is 1312531331. The next prime is 1312531397. The reversal of 1312531342 is 2431352131.

It is a happy number.

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, 99858 + ... + 112234.

It is an arithmetic number, because the mean of its divisors is an integer number (130340340).

Almost surely, 2^1312531342 is an apocalyptic number.

1312531342 is a deficient number, since it is larger than the sum of its proper divisors (772914098).

1312531342 is a wasteful number, since it uses less digits than its factorization.

1312531342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15515.

The product of its digits is 2160, while the sum is 25.

The square root of 1312531342 is about 36228.8744235865. The cubic root of 1312531342 is about 1094.8885000067. Note that the first 3 decimals are identical.

Adding to 1312531342 its reverse (2431352131), we get a palindrome (3743883473).

The spelling of 1312531342 in words is "one billion, three hundred twelve million, five hundred thirty-one thousand, three hundred forty-two".