3123420101 has 4 divisors (see below), whose sum is σ = 3153744672. Its totient is φ = 3093095532.

The previous prime is 3123420073. The next prime is 3123420103. The reversal of 3123420101 is 1010243213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1010243213 = 7 ⋅144320459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123420101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123420101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123420103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15162131 + ... + 15162336.

It is an arithmetic number, because the mean of its divisors is an integer number (788436168).

Almost surely, 2^3123420101 is an apocalyptic number.

It is an amenable number.

3123420101 is a deficient number, since it is larger than the sum of its proper divisors (30324571).

3123420101 is a wasteful number, since it uses less digits than its factorization.

3123420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30324570.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3123420101 is about 55887.5666047467. The cubic root of 3123420101 is about 1461.7624460966.

Adding to 3123420101 its reverse (1010243213), we get a palindrome (4133663314).

The spelling of 3123420101 in words is "three billion, one hundred twenty-three million, four hundred twenty thousand, one hundred one".