31444372 has 6 divisors (see below), whose sum is σ = 55027658. Its totient is φ = 15722184.

The previous prime is 31444367. The next prime is 31444379. The reversal of 31444372 is 27344413.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 15476356 = 3996^2 + 3934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31444372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930543 + ... + 3930550.

Almost surely, 2^31444372 is an apocalyptic number.

It is an amenable number.

31444372 is a deficient number, since it is larger than the sum of its proper divisors (23583286).

31444372 is a wasteful number, since it uses less digits than its factorization.

31444372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861097 (or 7861095 counting only the distinct ones).

The product of its digits is 8064, while the sum is 28.

The square root of 31444372 is about 5607.5281541870. The cubic root of 31444372 is about 315.6319621638.

Adding to 31444372 its reverse (27344413), we get a palindrome (58788785).

The spelling of 31444372 in words is "thirty-one million, four hundred forty-four thousand, three hundred seventy-two".