231542571204 has 432 divisors, whose sum is σ = 727813632000. Its totient is φ = 62027659008.

The previous prime is 231542571203. The next prime is 231542571209. The reversal of 231542571204 is 402175245132.

231542571204 is a `hidden beast` number, since 2 + 31 + 54 + 2 + 571 + 2 + 0 + 4 = 666.

It is a super-2 number, since 2×231542571204² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231542571203) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 566118552 + ... + 566118960.

Almost surely, 2^231542571204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231542571204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363906816000).

231542571204 is an abundant number, since it is smaller than the sum of its proper divisors (496271060796).

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

231542571204 is a wasteful number, since it uses less digits than its factorization.

231542571204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 231542571204 in words is "two hundred thirty-one billion, five hundred forty-two million, five hundred seventy-one thousand, two hundred four".