31444130 has 32 divisors (see below), whose sum is σ = 58399488. Its totient is φ = 12182400.

The previous prime is 31444121. The next prime is 31444157. The reversal of 31444130 is 3144413.

It is a happy number.

It is a super-2 number, since 2×31444130² = 1977466622913800, which contains 22 as substring.

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, 110969 + ... + 111251.

It is an arithmetic number, because the mean of its divisors is an integer number (1824984).

Almost surely, 2^31444130 is an apocalyptic number.

31444130 is a deficient number, since it is larger than the sum of its proper divisors (26955358).

31444130 is a wasteful number, since it uses less digits than its factorization.

31444130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 31444130 is about 5607.5065760104. The cubic root of 31444130 is about 315.6311524468.

Adding to 31444130 its reverse (3144413), we get a palindrome (34588543).

It can be divided in two parts, 314 and 44130, that added together give a palindrome (44444).

The spelling of 31444130 in words is "thirty-one million, four hundred forty-four thousand, one hundred thirty".