321401013 has 4 divisors (see below), whose sum is σ = 428534688. Its totient is φ = 214267340.

The previous prime is 321400987. The next prime is 321401021. The reversal of 321401013 is 310104123.

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.

It is a cyclic number.

It is not a de Polignac number, because 321401013 - 2⁶ = 321400949 is a prime.

It is a super-2 number, since 2×321401013² = 206597222314852338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321400983 and 321401001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321401023) 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, 53566833 + ... + 53566838.

It is an arithmetic number, because the mean of its divisors is an integer number (107133672).

Almost surely, 2^321401013 is an apocalyptic number.

It is an amenable number.

321401013 is a deficient number, since it is larger than the sum of its proper divisors (107133675).

321401013 is a wasteful number, since it uses less digits than its factorization.

321401013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107133674.

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

The square root of 321401013 is about 17927.6605556888. The cubic root of 321401013 is about 684.9871331520.

Adding to 321401013 its reverse (310104123), we get a palindrome (631505136).

It can be divided in two parts, 32140 and 1013, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 321401013 in words is "three hundred twenty-one million, four hundred one thousand, thirteen".