1312033121 has 8 divisors (see below), whose sum is σ = 1499697984. Its totient is φ = 1124426160.

The previous prime is 1312033013. The next prime is 1312033139. The reversal of 1312033121 is 1213302131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312033121 - 2²² = 1307838817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312033121.

It is not an unprimeable number, because it can be changed into a prime (1312032121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58886 + ... + 78048.

It is an arithmetic number, because the mean of its divisors is an integer number (187462248).

Almost surely, 2^1312033121 is an apocalyptic number.

It is an amenable number.

1312033121 is a deficient number, since it is larger than the sum of its proper divisors (187664863).

1312033121 is an equidigital number, since it uses as much as digits as its factorization.

1312033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28951.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1312033121 is about 36221.9977499861. The cubic root of 1312033121 is about 1094.7499470031.

Adding to 1312033121 its reverse (1213302131), we get a palindrome (2525335252).

The spelling of 1312033121 in words is "one billion, three hundred twelve million, thirty-three thousand, one hundred twenty-one".