31355104 has 48 divisors (see below), whose sum is σ = 67795056. Its totient is φ = 14156800.

The previous prime is 31355099. The next prime is 31355131. The reversal of 31355104 is 40155313.

31355104 = T₁₁ + T₁₂ + ... + T₅₇₂.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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, 98754 + ... + 99070.

It is an arithmetic number, because the mean of its divisors is an integer number (1412397).

Almost surely, 2^31355104 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 31355104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33897528).

31355104 is an abundant number, since it is smaller than the sum of its proper divisors (36439952).

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

31355104 is a wasteful number, since it uses less digits than its factorization.

31355104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 31355104 is about 5599.5628400796. The cubic root of 31355104 is about 315.3329946295.

The spelling of 31355104 in words is "thirty-one million, three hundred fifty-five thousand, one hundred four".