231321534230501 has 48 divisors (see below), whose sum is σ = 288432055363200. Its totient is φ = 183772218199680.

The previous prime is 231321534230489. The next prime is 231321534230503. The reversal of 231321534230501 is 105032435123132.

It is not a de Polignac number, because 231321534230501 - 2²² = 231321530036197 is a prime.

It is a super-2 number, since 2×231321534230501² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321534230503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40572035 + ... + 45920943.

It is an arithmetic number, because the mean of its divisors is an integer number (6009001153400).

Almost surely, 2^{231321534230501} is an apocalyptic number.

It is an amenable number.

231321534230501 is a deficient number, since it is larger than the sum of its proper divisors (57110521132699).

231321534230501 is a wasteful number, since it uses less digits than its factorization.

231321534230501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350410 (or 5350399 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 231321534230501 its reverse (105032435123132), we get a palindrome (336353969353633).

The spelling of 231321534230501 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, five hundred thirty-four million, two hundred thirty thousand, five hundred one".