249930231 has 4 divisors (see below), whose sum is σ = 333240312. Its totient is φ = 166620152.

The previous prime is 249930229. The next prime is 249930251. The reversal of 249930231 is 132039942.

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

It is a cyclic number.

It is not a de Polignac number, because 249930231 - 2¹ = 249930229 is a prime.

It is a super-2 number, since 2×249930231² = 124930240735426722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249930192 and 249930201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249930211) 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, 41655036 + ... + 41655041.

It is an arithmetic number, because the mean of its divisors is an integer number (83310078).

Almost surely, 2^249930231 is an apocalyptic number.

249930231 is a deficient number, since it is larger than the sum of its proper divisors (83310081).

249930231 is an equidigital number, since it uses as much as digits as its factorization.

249930231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83310080.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 249930231 is about 15809.1818573891. The cubic root of 249930231 is about 629.9019172073.

The spelling of 249930231 in words is "two hundred forty-nine million, nine hundred thirty thousand, two hundred thirty-one".