231343202042 has 4 divisors (see below), whose sum is σ = 347014803066. Its totient is φ = 115671601020.

The previous prime is 231343202011. The next prime is 231343202099. The reversal of 231343202042 is 240202343132.

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

It can be written as a sum of positive squares in only one way, i.e., 118197752401 + 113145449641 = 343799^2 + 336371^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57835800509 + ... + 57835800512.

Almost surely, 2^231343202042 is an apocalyptic number.

231343202042 is a deficient number, since it is larger than the sum of its proper divisors (115671601024).

231343202042 is a wasteful number, since it uses less digits than its factorization.

231343202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115671601023.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 231343202042 its reverse (240202343132), we get a palindrome (471545545174).

The spelling of 231343202042 in words is "two hundred thirty-one billion, three hundred forty-three million, two hundred two thousand, forty-two".