12961983 has 8 divisors (see below), whose sum is σ = 17303296. Its totient is φ = 8631000.

The previous prime is 12961979. The next prime is 12961987. The reversal of 12961983 is 38916921.

It is an interprime number because it is at equal distance from previous prime (12961979) and next prime (12961987).

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

It is not a de Polignac number, because 12961983 - 2² = 12961979 is a prime.

It is a super-3 number, since 3×12961983³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961987) 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, 1098 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (2162912).

Almost surely, 2^12961983 is an apocalyptic number.

12961983 is a deficient number, since it is larger than the sum of its proper divisors (4341313).

12961983 is a wasteful number, since it uses less digits than its factorization.

12961983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165.

The product of its digits is 23328, while the sum is 39.

The square root of 12961983 is about 3600.2754061321. The cubic root of 12961983 is about 234.9040380791.

The spelling of 12961983 in words is "twelve million, nine hundred sixty-one thousand, nine hundred eighty-three".