31012194 has 16 divisors (see below), whose sum is σ = 64163520. Its totient is φ = 9980880.

The previous prime is 31012193. The next prime is 31012213. The reversal of 31012194 is 49121013.

It is a self number, because there is not a number n which added to its sum of digits gives 31012194.

It is not an unprimeable number, because it can be changed into a prime (31012193) 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 7 ways as a sum of consecutive naturals, for example, 88942 + ... + 89289.

It is an arithmetic number, because the mean of its divisors is an integer number (4010220).

Almost surely, 2^31012194 is an apocalyptic number.

31012194 is an abundant number, since it is smaller than the sum of its proper divisors (33151326).

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

31012194 is a wasteful number, since it uses less digits than its factorization.

31012194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178265.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 31012194 is about 5568.8593086915. The cubic root of 31012194 is about 314.1792490823.

The spelling of 31012194 in words is "thirty-one million, twelve thousand, one hundred ninety-four".