231243551450 has 96 divisors (see below), whose sum is σ = 459820266048. Its totient is φ = 86216832000.

The previous prime is 231243551377. The next prime is 231243551479. The reversal of 231243551450 is 54155342132.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231243551450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63579032 + ... + 63582668.

It is an arithmetic number, because the mean of its divisors is an integer number (4789794438).

Almost surely, 2^231243551450 is an apocalyptic number.

231243551450 is a deficient number, since it is larger than the sum of its proper divisors (228576714598).

231243551450 is a wasteful number, since it uses less digits than its factorization.

231243551450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368 (or 4363 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 231243551450 its reverse (54155342132), we get a palindrome (285398893582).

The spelling of 231243551450 in words is "two hundred thirty-one billion, two hundred forty-three million, five hundred fifty-one thousand, four hundred fifty".