231533531053151 has 4 divisors (see below), whose sum is σ = 231558445894152. Its totient is φ = 231508616212152.

The previous prime is 231533531053109. The next prime is 231533531053171. The reversal of 231533531053151 is 151350135335132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231533531053151 - 2¹⁸ = 231533530791007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231533531053099 and 231533531053108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533531053171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12457406561 + ... + 12457425146.

It is an arithmetic number, because the mean of its divisors is an integer number (57889611473538).

Almost surely, 2^{231533531053151} is an apocalyptic number.

231533531053151 is a deficient number, since it is larger than the sum of its proper divisors (24914841001).

231533531053151 is an equidigital number, since it uses as much as digits as its factorization.

231533531053151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24914841000.

The product of its (nonzero) digits is 303750, while the sum is 41.

Adding to 231533531053151 its reverse (151350135335132), we get a palindrome (382883666388283).

The spelling of 231533531053151 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, five hundred thirty-one million, fifty-three thousand, one hundred fifty-one".