3121890226 has 32 divisors (see below), whose sum is σ = 5770356480. Its totient is φ = 1233562176.

The previous prime is 3121890199. The next prime is 3121890283. The reversal of 3121890226 is 6220981213.

It is a junction number, because it is equal to n+sod(n) for n = 3121890191 and 3121890200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149835 + ... + 169393.

It is an arithmetic number, because the mean of its divisors is an integer number (180323640).

Almost surely, 2^3121890226 is an apocalyptic number.

3121890226 is a deficient number, since it is larger than the sum of its proper divisors (2648466254).

3121890226 is a wasteful number, since it uses less digits than its factorization.

3121890226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20458.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 3121890226 is about 55873.8778500293. The cubic root of 3121890226 is about 1461.5237463198.

The spelling of 3121890226 in words is "three billion, one hundred twenty-one million, eight hundred ninety thousand, two hundred twenty-six".