231241203172 has 60 divisors (see below), whose sum is σ = 499859681580. Its totient is φ = 93273696768.

The previous prime is 231241203169. The next prime is 231241203173. The reversal of 231241203172 is 271302142132.

It can be written as a sum of positive squares in 2 ways, for example, as 62793343396 + 168447859776 = 250586^2 + 410424^2 .

It is a super-3 number, since 3×231241203172³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 231241203172.

It is not an unprimeable number, because it can be changed into a prime (231241203173) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 544897 + ... + 871432.

It is an arithmetic number, because the mean of its divisors is an integer number (8330994693).

Almost surely, 2^231241203172 is an apocalyptic number.

It is an amenable number.

231241203172 is an abundant number, since it is smaller than the sum of its proper divisors (268618478408).

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

231241203172 is a wasteful number, since it uses less digits than its factorization.

231241203172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416378 (or 1416355 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 231241203172 in words is "two hundred thirty-one billion, two hundred forty-one million, two hundred three thousand, one hundred seventy-two".