248402831 has 4 divisors (see below), whose sum is σ = 248631192. Its totient is φ = 248174472.

The previous prime is 248402821. The next prime is 248402839. The reversal of 248402831 is 138204842.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248402831 is a prime.

It is a super-2 number, since 2×248402831² = 123407932897629122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248402839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112541 + ... + 114726.

It is an arithmetic number, because the mean of its divisors is an integer number (62157798).

Almost surely, 2^248402831 is an apocalyptic number.

248402831 is a deficient number, since it is larger than the sum of its proper divisors (228361).

248402831 is a wasteful number, since it uses less digits than its factorization.

248402831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228360.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 248402831 is about 15760.8004555606. The cubic root of 248402831 is about 628.6161199850.

The spelling of 248402831 in words is "two hundred forty-eight million, four hundred two thousand, eight hundred thirty-one".