231500004 has 24 divisors (see below), whose sum is σ = 551660928. Its totient is φ = 75524640.

The previous prime is 231499969. The next prime is 231500023. The reversal of 231500004 is 400005132.

231500004 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×231500004³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204667 + ... + 205794.

It is an arithmetic number, because the mean of its divisors is an integer number (22985872).

Almost surely, 2^231500004 is an apocalyptic number.

It is an amenable number.

231500004 is an abundant number, since it is smaller than the sum of its proper divisors (320160924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231500004 is a wasteful number, since it uses less digits than its factorization.

231500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410515 (or 410513 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 231500004 is about 15215.1241861511. The cubic root of 231500004 is about 614.0216263466.

Adding to 231500004 its reverse (400005132), we get a palindrome (631505136).

The spelling of 231500004 in words is "two hundred thirty-one million, five hundred thousand, four".