3121020030 has 64 divisors (see below), whose sum is σ = 7540672320. Its totient is φ = 826715136.

The previous prime is 3121019981. The next prime is 3121020037. The reversal of 3121020030 is 300201213.

It is a happy number.

It is a super-2 number, since 2×3121020030² = 19481532055322401800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3121019988 and 3121020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121020037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4779184 + ... + 4779836.

It is an arithmetic number, because the mean of its divisors is an integer number (117823005).

Almost surely, 2^3121020030 is an apocalyptic number.

3121020030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3121020030 is an abundant number, since it is smaller than the sum of its proper divisors (4419652290).

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

3121020030 is a wasteful number, since it uses less digits than its factorization.

3121020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3121020030 is about 55866.0901621010. The cubic root of 3121020030 is about 1461.3879386079.

Adding to 3121020030 its reverse (300201213), we get a palindrome (3421221243).

The spelling of 3121020030 in words is "three billion, one hundred twenty-one million, twenty thousand, thirty".