31820228094 has 32 divisors (see below), whose sum is σ = 66449839104. Its totient is φ = 10139101280.

The previous prime is 31820228081. The next prime is 31820228119. The reversal of 31820228094 is 49082202813.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145624 + ... + 291284.

It is an arithmetic number, because the mean of its divisors is an integer number (2076557472).

Almost surely, 2^31820228094 is an apocalyptic number.

31820228094 is an abundant number, since it is smaller than the sum of its proper divisors (34629611010).

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

31820228094 is a wasteful number, since it uses less digits than its factorization.

31820228094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147272.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 31820228094 in words is "thirty-one billion, eight hundred twenty million, two hundred twenty-eight thousand, ninety-four".