231545353121250 has 160 divisors (see below), whose sum is σ = 661778538279936. Its totient is φ = 52890074280000.

The previous prime is 231545353121249. The next prime is 231545353121273. The reversal of 231545353121250 is 52121353545132.

It is a super-2 number, since 2×231545353121250² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 37308027 + ... + 43069473.

Almost surely, 2^{231545353121250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231545353121250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330889269139968).

231545353121250 is an abundant number, since it is smaller than the sum of its proper divisors (430233185158686).

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

231545353121250 is a wasteful number, since it uses less digits than its factorization.

231545353121250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763010 (or 5762995 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 231545353121250 in words is "two hundred thirty-one trillion, five hundred forty-five billion, three hundred fifty-three million, one hundred twenty-one thousand, two hundred fifty".