31418164 has 6 divisors (see below), whose sum is σ = 54981794. Its totient is φ = 15709080.

The previous prime is 31418147. The next prime is 31418201. The reversal of 31418164 is 46181413.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 4169764 = 5220^2 + 2042^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3927267 + ... + 3927274.

Almost surely, 2^31418164 is an apocalyptic number.

It is an amenable number.

31418164 is a deficient number, since it is larger than the sum of its proper divisors (23563630).

31418164 is a wasteful number, since it uses less digits than its factorization.

31418164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7854545 (or 7854543 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 31418164 is about 5605.1908085274. The cubic root of 31418164 is about 315.5442476680.

Adding to 31418164 its reverse (46181413), we get a palindrome (77599577).

The spelling of 31418164 in words is "thirty-one million, four hundred eighteen thousand, one hundred sixty-four".