31144308 has 48 divisors (see below), whose sum is σ = 78763776. Its totient is φ = 9521280.

The previous prime is 31144307. The next prime is 31144313. The reversal of 31144308 is 80344113.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27685 + ... + 28787.

It is an arithmetic number, because the mean of its divisors is an integer number (1640912).

Almost surely, 2^31144308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31144308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39381888).

31144308 is an abundant number, since it is smaller than the sum of its proper divisors (47619468).

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

31144308 is a wasteful number, since it uses less digits than its factorization.

31144308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 31144308 is about 5580.7085571637. The cubic root of 31144308 is about 314.6247585152.

The spelling of 31144308 in words is "thirty-one million, one hundred forty-four thousand, three hundred eight".