31242673 has 8 divisors (see below), whose sum is σ = 38952000. Its totient is φ = 24344880.

The previous prime is 31242661. The next prime is 31242677. The reversal of 31242673 is 37624213.

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

It is not a de Polignac number, because 31242673 - 2⁵ = 31242641 is a prime.

It is a super-2 number, since 2×31242673² = 1952209232369858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31242677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202798 + ... + 202951.

It is an arithmetic number, because the mean of its divisors is an integer number (4869000).

Almost surely, 2^31242673 is an apocalyptic number.

It is an amenable number.

31242673 is a deficient number, since it is larger than the sum of its proper divisors (7709327).

31242673 is a wasteful number, since it uses less digits than its factorization.

31242673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405767.

The product of its digits is 6048, while the sum is 28.

The square root of 31242673 is about 5589.5145585283. The cubic root of 31242673 is about 314.9556433721.

Adding to 31242673 its reverse (37624213), we get a palindrome (68866886).

It can be divided in two parts, 3 and 1242673, that added together give a triangular number (1242676 = T₁₅₇₆).

The spelling of 31242673 in words is "thirty-one million, two hundred forty-two thousand, six hundred seventy-three".