231121004 has 6 divisors (see below), whose sum is σ = 404461764. Its totient is φ = 115560500.

The previous prime is 231120983. The next prime is 231121013. The reversal of 231121004 is 400121132.

231121004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231121004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28890122 + ... + 28890129.

It is an arithmetic number, because the mean of its divisors is an integer number (67410294).

Almost surely, 2^231121004 is an apocalyptic number.

It is an amenable number.

231121004 is a deficient number, since it is larger than the sum of its proper divisors (173340760).

231121004 is a wasteful number, since it uses less digits than its factorization.

231121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57780255 (or 57780253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231121004 is about 15202.6643717475. The cubic root of 231121004 is about 613.6863616901.

Adding to 231121004 its reverse (400121132), we get a palindrome (631242136).

The spelling of 231121004 in words is "two hundred thirty-one million, one hundred twenty-one thousand, four".