1312821041 has 8 divisors (see below), whose sum is σ = 1505708544. Its totient is φ = 1121268960.

The previous prime is 1312821031. The next prime is 1312821049. The reversal of 1312821041 is 1401282131.

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

It is a de Polignac number, because none of the positive numbers 2^k-1312821041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312820998 and 1312821016.

It is not an unprimeable number, because it can be changed into a prime (1312821049) 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, 331745 + ... + 335678.

It is an arithmetic number, because the mean of its divisors is an integer number (188213568).

Almost surely, 2^1312821041 is an apocalyptic number.

It is an amenable number.

1312821041 is a deficient number, since it is larger than the sum of its proper divisors (192887503).

1312821041 is an equidigital number, since it uses as much as digits as its factorization.

1312821041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667711.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1312821041 is about 36232.8723813059. The cubic root of 1312821041 is about 1094.9690478661.

The spelling of 1312821041 in words is "one billion, three hundred twelve million, eight hundred twenty-one thousand, forty-one".