321402101 has 4 divisors (see below), whose sum is σ = 321439104. Its totient is φ = 321365100.

The previous prime is 321402097. The next prime is 321402113. The reversal of 321402101 is 101204123.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 321402101 - 2² = 321402097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321402131) 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, 2396 + ... + 25466.

It is an arithmetic number, because the mean of its divisors is an integer number (80359776).

Almost surely, 2^321402101 is an apocalyptic number.

It is an amenable number.

321402101 is a deficient number, since it is larger than the sum of its proper divisors (37003).

321402101 is a wasteful number, since it uses less digits than its factorization.

321402101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37002.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 321402101 is about 17927.6908998343. The cubic root of 321402101 is about 684.9879060859.

Adding to 321402101 its reverse (101204123), we get a palindrome (422606224).

The spelling of 321402101 in words is "three hundred twenty-one million, four hundred two thousand, one hundred one".