231500323451404 has 24 divisors (see below), whose sum is σ = 463039195627008. Its totient is φ = 99206163895440.

The previous prime is 231500323451347. The next prime is 231500323451461. The reversal of 231500323451404 is 404154323005132.

It is an interprime number because it is at equal distance from previous prime (231500323451347) and next prime (231500323451461).

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, 343842724 + ... + 344515339.

It is an arithmetic number, because the mean of its divisors is an integer number (19293299817792).

Almost surely, 2^{231500323451404} is an apocalyptic number.

It is an amenable number.

231500323451404 is an abundant number, since it is smaller than the sum of its proper divisors (231538872175604).

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

231500323451404 is a wasteful number, since it uses less digits than its factorization.

231500323451404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688370085 (or 688370083 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 231500323451404 its reverse (404154323005132), we get a palindrome (635654646456536).

The spelling of 231500323451404 in words is "two hundred thirty-one trillion, five hundred billion, three hundred twenty-three million, four hundred fifty-one thousand, four hundred four".