31401044 has 6 divisors (see below), whose sum is σ = 54951834. Its totient is φ = 15700520.

The previous prime is 31401043. The next prime is 31401061. The reversal of 31401044 is 44010413.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 4048144 = 5230^2 + 2012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401043) by changing a digit.

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 as a sum of consecutive naturals, namely, 3925127 + ... + 3925134.

It is an arithmetic number, because the mean of its divisors is an integer number (9158639).

Almost surely, 2^31401044 is an apocalyptic number.

It is an amenable number.

31401044 is a deficient number, since it is larger than the sum of its proper divisors (23550790).

31401044 is a wasteful number, since it uses less digits than its factorization.

31401044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850265 (or 7850263 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31401044 is about 5603.6634445691. The cubic root of 31401044 is about 315.4869230894.

Adding to 31401044 its reverse (44010413), we get a palindrome (75411457).

The spelling of 31401044 in words is "thirty-one million, four hundred one thousand, forty-four".