3112155020 has 96 divisors (see below), whose sum is σ = 7265958336. Its totient is φ = 1112371200.

The previous prime is 3112155019. The next prime is 3112155023. The reversal of 3112155020 is 205512113.

It is a happy number.

It is a super-2 number, since 2×3112155020² = 19371017737022400800, which contains 22 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 = 3112154983 and 3112155001.

It is not an unprimeable number, because it can be changed into a prime (3112155023) 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, 1459355 + ... + 1461485.

It is an arithmetic number, because the mean of its divisors is an integer number (75687066).

Almost surely, 2^3112155020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3112155020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3632979168).

3112155020 is an abundant number, since it is smaller than the sum of its proper divisors (4153803316).

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

3112155020 is a wasteful number, since it uses less digits than its factorization.

3112155020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 3112155020 is about 55786.6921406889. The cubic root of 3112155020 is about 1460.0029742856.

Adding to 3112155020 its reverse (205512113), we get a palindrome (3317667133).

The spelling of 3112155020 in words is "three billion, one hundred twelve million, one hundred fifty-five thousand, twenty".