1312982121 has 8 divisors (see below), whose sum is σ = 1909792224. Its totient is φ = 795746720.

The previous prime is 1312982101. The next prime is 1312982129. The reversal of 1312982121 is 1212892131.

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 1312982121 - 2⁵ = 1312982089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312982129) 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, 19893636 + ... + 19893701.

It is an arithmetic number, because the mean of its divisors is an integer number (238724028).

Almost surely, 2^1312982121 is an apocalyptic number.

1312982121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312982121 is a deficient number, since it is larger than the sum of its proper divisors (596810103).

1312982121 is a wasteful number, since it uses less digits than its factorization.

1312982121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39787351.

The product of its digits is 1728, while the sum is 30.

The square root of 1312982121 is about 36235.0951564916. The cubic root of 1312982121 is about 1095.0138293952.

The spelling of 1312982121 in words is "one billion, three hundred twelve million, nine hundred eighty-two thousand, one hundred twenty-one".