1312203442 has 32 divisors (see below), whose sum is σ = 2232546624. Its totient is φ = 573196800.

The previous prime is 1312203419. The next prime is 1312203467. The reversal of 1312203442 is 2443022131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49578 + ... + 71290.

It is an arithmetic number, because the mean of its divisors is an integer number (69767082).

Almost surely, 2^1312203442 is an apocalyptic number.

1312203442 is a deficient number, since it is larger than the sum of its proper divisors (920343182).

1312203442 is a wasteful number, since it uses less digits than its factorization.

1312203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21834.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1312203442 is about 36224.3487450085. The cubic root of 1312203442 is about 1094.7973164470.

Adding to 1312203442 its reverse (2443022131), we get a palindrome (3755225573).

The spelling of 1312203442 in words is "one billion, three hundred twelve million, two hundred three thousand, four hundred forty-two".