231164501 has 4 divisors (see below), whose sum is σ = 234331212. Its totient is φ = 227997792.

The previous prime is 231164497. The next prime is 231164509. The reversal of 231164501 is 105461132.

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 80120401 + 151044100 = 8951^2 + 12290^2 .

It is a cyclic number.

It is not a de Polignac number, because 231164501 - 2² = 231164497 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 (231164509) 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, 1583246 + ... + 1583391.

It is an arithmetic number, because the mean of its divisors is an integer number (58582803).

Almost surely, 2^231164501 is an apocalyptic number.

It is an amenable number.

231164501 is a deficient number, since it is larger than the sum of its proper divisors (3166711).

231164501 is an equidigital number, since it uses as much as digits as its factorization.

231164501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166710.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 231164501 is about 15204.0948760523. The cubic root of 231164501 is about 613.7248578902.

The spelling of 231164501 in words is "two hundred thirty-one million, one hundred sixty-four thousand, five hundred one".