31042430 has 8 divisors (see below), whose sum is σ = 55876392. Its totient is φ = 12416968.

The previous prime is 31042421. The next prime is 31042457. The reversal of 31042430 is 3424013.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31042399 and 31042408.

It is a congruent number.

It is an unprimeable number.

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, 1552112 + ... + 1552131.

It is an arithmetic number, because the mean of its divisors is an integer number (6984549).

Almost surely, 2^31042430 is an apocalyptic number.

31042430 is a deficient number, since it is larger than the sum of its proper divisors (24833962).

31042430 is a wasteful number, since it uses less digits than its factorization.

31042430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104250.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 31042430 is about 5571.5733863963. The cubic root of 31042430 is about 314.2813211704.

Adding to 31042430 its reverse (3424013), we get a palindrome (34466443).

The spelling of 31042430 in words is "thirty-one million, forty-two thousand, four hundred thirty".