1312295229209 has 4 divisors (see below), whose sum is σ = 1312303948800. Its totient is φ = 1312286509620.

The previous prime is 1312295229173. The next prime is 1312295229211. The reversal of 1312295229209 is 9029225922131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312295229209 - 2³² = 1308000261913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312295229109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4130009 + ... + 4436390.

It is an arithmetic number, because the mean of its divisors is an integer number (328075987200).

Almost surely, 2^{1312295229209} is an apocalyptic number.

It is an amenable number.

1312295229209 is a deficient number, since it is larger than the sum of its proper divisors (8719591).

1312295229209 is an equidigital number, since it uses as much as digits as its factorization.

1312295229209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719590.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 1312295229209 in words is "one trillion, three hundred twelve billion, two hundred ninety-five million, two hundred twenty-nine thousand, two hundred nine".