321431110211403 has 12 divisors (see below), whose sum is σ = 464316439707120. Its totient is φ = 214274918365776.

The previous prime is 321431110211353. The next prime is 321431110211461. The reversal of 321431110211403 is 304112011134123.

321431110211403 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 31 + 1 + 10 + 211 + 403 = 666.

It is not a de Polignac number, because 321431110211403 - 2¹³ = 321431110203211 is a prime.

It is a super-2 number, since 2×321431110211403² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321431110211803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1040540476 + ... + 1040849337.

It is an arithmetic number, because the mean of its divisors is an integer number (38693036642260).

Almost surely, 2^{321431110211403} is an apocalyptic number.

321431110211403 is a deficient number, since it is larger than the sum of its proper divisors (142885329495717).

321431110211403 is a wasteful number, since it uses less digits than its factorization.

321431110211403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081406978 (or 2081406975 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 321431110211403 its reverse (304112011134123), we get a palindrome (625543121345526).

The spelling of 321431110211403 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, one hundred ten million, two hundred eleven thousand, four hundred three".