3151222220 has 24 divisors (see below), whose sum is σ = 6683091408. Its totient is φ = 1248008000.

The previous prime is 3151222213. The next prime is 3151222229. The reversal of 3151222220 is 222221513.

It is a super-3 number, since 3×3151222220³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3151222192 and 3151222201.

It is not an unprimeable number, because it can be changed into a prime (3151222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777986 + ... + 782025.

It is an arithmetic number, because the mean of its divisors is an integer number (278462142).

Almost surely, 2^3151222220 is an apocalyptic number.

It is an amenable number.

3151222220 is an abundant number, since it is smaller than the sum of its proper divisors (3531869188).

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

3151222220 is a wasteful number, since it uses less digits than its factorization.

3151222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560121 (or 1560119 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 3151222220 is about 56135.7481467915. The cubic root of 3151222220 is about 1466.0867768373.

Adding to 3151222220 its reverse (222221513), we get a palindrome (3373443733).

The spelling of 3151222220 in words is "three billion, one hundred fifty-one million, two hundred twenty-two thousand, two hundred twenty".