3121021230 has 16 divisors (see below), whose sum is σ = 7490451024. Its totient is φ = 832272320.

The previous prime is 3121021213. The next prime is 3121021237. The reversal of 3121021230 is 321201213.

It is a super-2 number, since 2×3121021230² = 19481547036221425800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121021237) 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, 52016991 + ... + 52017050.

It is an arithmetic number, because the mean of its divisors is an integer number (468153189).

Almost surely, 2^3121021230 is an apocalyptic number.

3121021230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3121021230 is an abundant number, since it is smaller than the sum of its proper divisors (4369429794).

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

3121021230 is a wasteful number, since it uses less digits than its factorization.

3121021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104034051.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3121021230 is about 55866.1009020676. The cubic root of 3121021230 is about 1461.3881259041.

Adding to 3121021230 its reverse (321201213), we get a palindrome (3442222443).

It can be divided in two parts, 3121021 and 230, that added together give a triangular number (3121251 = T₂₄₉₈).

The spelling of 3121021230 in words is "three billion, one hundred twenty-one million, twenty-one thousand, two hundred thirty".