231562801 has 4 divisors (see below), whose sum is σ = 233855604. Its totient is φ = 229270000.

The previous prime is 231562759. The next prime is 231562819. The reversal of 231562801 is 108265132.

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 97002801 + 134560000 = 9849^2 + 11600^2 .

It is not a de Polignac number, because 231562801 - 2⁷ = 231562673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231562801.

It is not an unprimeable number, because it can be changed into a prime (231562871) 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, 1146250 + ... + 1146451.

It is an arithmetic number, because the mean of its divisors is an integer number (58463901).

Almost surely, 2^231562801 is an apocalyptic number.

It is an amenable number.

231562801 is a deficient number, since it is larger than the sum of its proper divisors (2292803).

231562801 is a wasteful number, since it uses less digits than its factorization.

231562801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292802.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 231562801 is about 15217.1876836688. The cubic root of 231562801 is about 614.0771414358.

The spelling of 231562801 in words is "two hundred thirty-one million, five hundred sixty-two thousand, eight hundred one".