231125501 has 4 divisors (see below), whose sum is σ = 231211104. Its totient is φ = 231039900.

The previous prime is 231125483. The next prime is 231125533. The reversal of 231125501 is 105521132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231125501 - 2¹⁴ = 231109117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231125561) 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, 38615 + ... + 44196.

It is an arithmetic number, because the mean of its divisors is an integer number (57802776).

Almost surely, 2^231125501 is an apocalyptic number.

It is an amenable number.

231125501 is a deficient number, since it is larger than the sum of its proper divisors (85603).

231125501 is an equidigital number, since it uses as much as digits as its factorization.

231125501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85602.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 231125501 is about 15202.8122727343. The cubic root of 231125501 is about 613.6903418991.

Adding to 231125501 its reverse (105521132), we get a palindrome (336646633).

The spelling of 231125501 in words is "two hundred thirty-one million, one hundred twenty-five thousand, five hundred one".