231245501 has 4 divisors (see below), whose sum is σ = 231309372. Its totient is φ = 231181632.

The previous prime is 231245491. The next prime is 231245503. The reversal of 231245501 is 105542132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 219336100 + 11909401 = 14810^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 231245501 - 2¹⁰ = 231244477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231245503) 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, 26156 + ... + 33861.

It is an arithmetic number, because the mean of its divisors is an integer number (57827343).

Almost surely, 2^231245501 is an apocalyptic number.

It is an amenable number.

231245501 is a deficient number, since it is larger than the sum of its proper divisors (63871).

231245501 is an equidigital number, since it uses as much as digits as its factorization.

231245501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63870.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 231245501 is about 15206.7583988173. The cubic root of 231245501 is about 613.7965325463.

Adding to 231245501 its reverse (105542132), we get a palindrome (336787633).

The spelling of 231245501 in words is "two hundred thirty-one million, two hundred forty-five thousand, five hundred one".