31349016 has 24 divisors (see below), whose sum is σ = 84903780. Its totient is φ = 10449648.

The previous prime is 31349011. The next prime is 31349041. The reversal of 31349016 is 61094313.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31349011) 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 5 ways as a sum of consecutive naturals, for example, 217630 + ... + 217773.

Almost surely, 2^31349016 is an apocalyptic number.

31349016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31349016 is an abundant number, since it is smaller than the sum of its proper divisors (53554764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31349016 is a wasteful number, since it uses less digits than its factorization.

31349016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435415 (or 435408 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 31349016 is about 5599.0191998242. The cubic root of 31349016 is about 315.3125846453.

The spelling of 31349016 in words is "thirty-one million, three hundred forty-nine thousand, sixteen".