31106428 has 6 divisors (see below), whose sum is σ = 54436256. Its totient is φ = 15553212.

The previous prime is 31106417. The next prime is 31106429. The reversal of 31106428 is 82460113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31106429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888300 + ... + 3888307.

Almost surely, 2^31106428 is an apocalyptic number.

It is an amenable number.

31106428 is a deficient number, since it is larger than the sum of its proper divisors (23329828).

31106428 is a wasteful number, since it uses less digits than its factorization.

31106428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776611 (or 7776609 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 31106428 is about 5577.3136902993. The cubic root of 31106428 is about 314.4971501684.

The spelling of 31106428 in words is "thirty-one million, one hundred six thousand, four hundred twenty-eight".