31285906122 has 64 divisors (see below), whose sum is σ = 66653798400. Its totient is φ = 9761938560.

The previous prime is 31285906117. The next prime is 31285906129. The reversal of 31285906122 is 22160958213.

It is not an unprimeable number, because it can be changed into a prime (31285906129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4985847 + ... + 4992117.

It is an arithmetic number, because the mean of its divisors is an integer number (1041465600).

Almost surely, 2^31285906122 is an apocalyptic number.

31285906122 is an abundant number, since it is smaller than the sum of its proper divisors (35367892278).

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

31285906122 is a wasteful number, since it uses less digits than its factorization.

31285906122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 31285906122 in words is "thirty-one billion, two hundred eighty-five million, nine hundred six thousand, one hundred twenty-two".