31242622 has 8 divisors (see below), whose sum is σ = 46896696. Its totient is φ = 15610392.

The previous prime is 31242619. The next prime is 31242623. The reversal of 31242622 is 22624213.

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

It is a super-2 number, since 2×31242622² = 1952202858869768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31242593 and 31242602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242623) by changing a digit.

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, 1228 + ... + 7999.

It is an arithmetic number, because the mean of its divisors is an integer number (5862087).

Almost surely, 2^31242622 is an apocalyptic number.

31242622 is a deficient number, since it is larger than the sum of its proper divisors (15654074).

31242622 is a wasteful number, since it uses less digits than its factorization.

31242622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10922.

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

The square root of 31242622 is about 5589.5099964129. The cubic root of 31242622 is about 314.9554719960.

Adding to 31242622 its reverse (22624213), we get a palindrome (53866835).

It can be divided in two parts, 3124 and 2622, that multiplied together give a triangular number (8191128 = T₄₀₄₇).

The spelling of 31242622 in words is "thirty-one million, two hundred forty-two thousand, six hundred twenty-two".