31506096 has 20 divisors (see below), whose sum is σ = 81390872. Its totient is φ = 10502016.

The previous prime is 31506091. The next prime is 31506103. The reversal of 31506096 is 69060513.

It is a happy number.

It is a super-2 number, since 2×31506096² = 1985268170322432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31506091) 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 3 ways as a sum of consecutive naturals, for example, 328141 + ... + 328236.

Almost surely, 2^31506096 is an apocalyptic number.

It is an amenable number.

31506096 is an abundant number, since it is smaller than the sum of its proper divisors (49884776).

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

31506096 is a wasteful number, since it uses less digits than its factorization.

31506096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656388 (or 656382 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 31506096 is about 5613.0291287325. The cubic root of 31506096 is about 315.8383513349.

The spelling of 31506096 in words is "thirty-one million, five hundred six thousand, ninety-six".