231042442 has 8 divisors (see below), whose sum is σ = 357743232. Its totient is φ = 111794700.

The previous prime is 231042433. The next prime is 231042463. The reversal of 231042442 is 244240132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×231042442² = 106761220010646728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863184 + ... + 1863307.

It is an arithmetic number, because the mean of its divisors is an integer number (44717904).

Almost surely, 2^231042442 is an apocalyptic number.

231042442 is a deficient number, since it is larger than the sum of its proper divisors (126700790).

231042442 is a wasteful number, since it uses less digits than its factorization.

231042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726524.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 231042442 is about 15200.0803287351. The cubic root of 231042442 is about 613.6168196308.

Adding to 231042442 its reverse (244240132), we get a palindrome (475282574).

The spelling of 231042442 in words is "two hundred thirty-one million, forty-two thousand, four hundred forty-two".