31420016 has 10 divisors (see below), whose sum is σ = 60876312. Its totient is φ = 15710000.

The previous prime is 31420009. The next prime is 31420027. The reversal of 31420016 is 61002413.

It is a junction number, because it is equal to n+sod(n) for n = 31419976 and 31420003.

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, 981860 + ... + 981891.

Almost surely, 2^31420016 is an apocalyptic number.

It is an amenable number.

31420016 is a deficient number, since it is larger than the sum of its proper divisors (29456296).

31420016 is a wasteful number, since it uses less digits than its factorization.

31420016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963759 (or 1963753 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31420016 is about 5605.3560101032. The cubic root of 31420016 is about 315.5504476533.

Adding to 31420016 its reverse (61002413), we get a palindrome (92422429).

The spelling of 31420016 in words is "thirty-one million, four hundred twenty thousand, sixteen".