31400044 has 12 divisors (see below), whose sum is σ = 59177104. Its totient is φ = 14492304.

The previous prime is 31400029. The next prime is 31400053. The reversal of 31400044 is 44000413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301872 + ... + 301975.

Almost surely, 2^31400044 is an apocalyptic number.

It is an amenable number.

31400044 is a deficient number, since it is larger than the sum of its proper divisors (27777060).

31400044 is a wasteful number, since it uses less digits than its factorization.

31400044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603864 (or 603862 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 31400044 is about 5603.5742165157. The cubic root of 31400044 is about 315.4835740471.

Adding to 31400044 its reverse (44000413), we get a palindrome (75400457).

The spelling of 31400044 in words is "thirty-one million, four hundred thousand, forty-four".