31442226 has 32 divisors (see below), whose sum is σ = 67011840. Its totient is φ = 9806544.

The previous prime is 31442189. The next prime is 31442239. The reversal of 31442226 is 62224413.

It is a super-2 number, since 2×31442226² = 1977227151670152, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31442196 and 31442205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7801 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (2094120).

Almost surely, 2^31442226 is an apocalyptic number.

31442226 is an abundant number, since it is smaller than the sum of its proper divisors (35569614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31442226 is a wasteful number, since it uses less digits than its factorization.

31442226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 2304, while the sum is 24.

The square root of 31442226 is about 5607.3368010135. The cubic root of 31442226 is about 315.6247816356.

Adding to 31442226 its reverse (62224413), we get a palindrome (93666639).

The spelling of 31442226 in words is "thirty-one million, four hundred forty-two thousand, two hundred twenty-six".