231533454051156 has 24 divisors (see below), whose sum is σ = 540270041590944. Its totient is φ = 77174201521120.

The previous prime is 231533454051127. The next prime is 231533454051157. The reversal of 231533454051156 is 651150454335132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533454051157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451795230 + ... + 452307413.

It is an arithmetic number, because the mean of its divisors is an integer number (22511251732956).

Almost surely, 2^{231533454051156} is an apocalyptic number.

It is an amenable number.

231533454051156 is an abundant number, since it is smaller than the sum of its proper divisors (308736587539788).

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

231533454051156 is a wasteful number, since it uses less digits than its factorization.

231533454051156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904123991 (or 904123989 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 231533454051156 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, four hundred fifty-four million, fifty-one thousand, one hundred fifty-six".