31380804 has 192 divisors, whose sum is σ = 104366080. Its totient is φ = 7931520.

The previous prime is 31380787. The next prime is 31380829. The reversal of 31380804 is 40808313.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304617 + ... + 304719.

Almost surely, 2^31380804 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 31380804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52183040).

31380804 is an abundant number, since it is smaller than the sum of its proper divisors (72985276).

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

31380804 is a wasteful number, since it uses less digits than its factorization.

31380804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 31380804 is about 5601.8571920391. The cubic root of 31380804 is about 315.4191246242.

The spelling of 31380804 in words is "thirty-one million, three hundred eighty thousand, eight hundred four".