73831121 has 16 divisors (see below), whose sum is σ = 91762944. Its totient is φ = 57841344.

The previous prime is 73831117. The next prime is 73831133. The reversal of 73831121 is 12113837.

It is a cyclic number.

It is not a de Polignac number, because 73831121 - 2² = 73831117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73831141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5435 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (5735184).

Almost surely, 2^73831121 is an apocalyptic number.

It is an amenable number.

73831121 is a deficient number, since it is larger than the sum of its proper divisors (17931823).

73831121 is a wasteful number, since it uses less digits than its factorization.

73831121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000.

The product of its digits is 1008, while the sum is 26.

The square root of 73831121 is about 8592.5037678199. The cubic root of 73831121 is about 419.5140278570.

Adding to 73831121 its reverse (12113837), we get a palindrome (85944958).

The spelling of 73831121 in words is "seventy-three million, eight hundred thirty-one thousand, one hundred twenty-one".