231551500432432 has 20 divisors (see below), whose sum is σ = 460756195118416. Its totient is φ = 112646675885760.

The previous prime is 231551500432403. The next prime is 231551500432451. The reversal of 231551500432432 is 234234005155132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195567145044 + ... + 195567146227.

Almost surely, 2^{231551500432432} is an apocalyptic number.

It is an amenable number.

231551500432432 is a deficient number, since it is larger than the sum of its proper divisors (229204694685984).

231551500432432 is a wasteful number, since it uses less digits than its factorization.

231551500432432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391134291316 (or 391134291310 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 231551500432432 its reverse (234234005155132), we get a palindrome (465785505587564).

The spelling of 231551500432432 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, five hundred million, four hundred thirty-two thousand, four hundred thirty-two".