242831997 has 6 divisors (see below), whose sum is σ = 350757342. Its totient is φ = 161887992.

The previous prime is 242831987. The next prime is 242832013. The reversal of 242831997 is 799138242.

242831997 is a `hidden beast` number, since 242 + 8 + 319 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 198556281 + 44275716 = 14091^2 + 6654^2 .

It is not a de Polignac number, because 242831997 - 2¹⁴ = 242815613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242831947) 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 5 ways as a sum of consecutive naturals, for example, 13490658 + ... + 13490675.

It is an arithmetic number, because the mean of its divisors is an integer number (58459557).

Almost surely, 2^242831997 is an apocalyptic number.

It is an amenable number.

242831997 is a deficient number, since it is larger than the sum of its proper divisors (107925345).

242831997 is a wasteful number, since it uses less digits than its factorization.

242831997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26981339 (or 26981336 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 242831997 is about 15583.0676376636. The cubic root of 242831997 is about 623.8813029283.

The spelling of 242831997 in words is "two hundred forty-two million, eight hundred thirty-one thousand, nine hundred ninety-seven".