31231004242 has 8 divisors (see below), whose sum is σ = 46851090300. Its totient is φ = 15613974144.

The previous prime is 31231004209. The next prime is 31231004261. The reversal of 31231004242 is 24240013213.

It can be written as a sum of positive squares in 2 ways, for example, as 29632523881 + 1598480361 = 172141^2 + 39981^2 .

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

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, 738267 + ... + 779422.

Almost surely, 2^31231004242 is an apocalyptic number.

31231004242 is a deficient number, since it is larger than the sum of its proper divisors (15620086058).

31231004242 is a wasteful number, since it uses less digits than its factorization.

31231004242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527980.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31231004242 its reverse (24240013213), we get a palindrome (55471017455).

The spelling of 31231004242 in words is "thirty-one billion, two hundred thirty-one million, four thousand, two hundred forty-two".