3123421403 has 4 divisors (see below), whose sum is σ = 3123624840. Its totient is φ = 3123217968.

The previous prime is 3123421349. The next prime is 3123421439. The reversal of 3123421403 is 3041243213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3123421403 - 2²⁴ = 3106644187 is a prime.

It is a super-2 number, since 2×3123421403² = 19511522521436976818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123421453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76625 + ... + 110082.

It is an arithmetic number, because the mean of its divisors is an integer number (780906210).

Almost surely, 2^3123421403 is an apocalyptic number.

3123421403 is a deficient number, since it is larger than the sum of its proper divisors (203437).

3123421403 is a wasteful number, since it uses less digits than its factorization.

3123421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203436.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3123421403 is about 55887.5782531324. The cubic root of 3123421403 is about 1461.7626492088.

Adding to 3123421403 its reverse (3041243213), we get a palindrome (6164664616).

The spelling of 3123421403 in words is "three billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred three".