3123302421 has 16 divisors (see below), whose sum is σ = 4390207488. Its totient is φ = 1972158000.

The previous prime is 3123302381. The next prime is 3123302447. The reversal of 3123302421 is 1242033213.

It is not a de Polignac number, because 3123302421 - 2¹⁰ = 3123301397 is a prime.

It is a super-2 number, since 2×3123302421² = 19510036026048922482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123302461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352905 + ... + 361646.

It is an arithmetic number, because the mean of its divisors is an integer number (274387968).

Almost surely, 2^3123302421 is an apocalyptic number.

3123302421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3123302421 is a deficient number, since it is larger than the sum of its proper divisors (1266905067).

3123302421 is a wasteful number, since it uses less digits than its factorization.

3123302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714632.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3123302421 is about 55886.5137667398. The cubic root of 3123302421 is about 1461.7440877629.

Adding to 3123302421 its reverse (1242033213), we get a palindrome (4365335634).

The spelling of 3123302421 in words is "three billion, one hundred twenty-three million, three hundred two thousand, four hundred twenty-one".