31401016 has 32 divisors (see below), whose sum is σ = 61948800. Its totient is φ = 14901120.

The previous prime is 31401011. The next prime is 31401017. The reversal of 31401016 is 61010413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401011) 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 in 7 ways as a sum of consecutive naturals, for example, 11950 + ... + 14338.

It is an arithmetic number, because the mean of its divisors is an integer number (1935900).

Almost surely, 2^31401016 is an apocalyptic number.

It is an amenable number.

31401016 is a deficient number, since it is larger than the sum of its proper divisors (30547784).

31401016 is a wasteful number, since it uses less digits than its factorization.

31401016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 31401016 is about 5603.6609462029. The cubic root of 31401016 is about 315.4868293172.

Adding to 31401016 its reverse (61010413), we get a palindrome (92411429).

The spelling of 31401016 in words is "thirty-one million, four hundred one thousand, sixteen".