321041431 has 2 divisors, whose sum is σ = 321041432. Its totient is φ = 321041430.

The previous prime is 321041419. The next prime is 321041437. The reversal of 321041431 is 134140123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321041431 is a prime.

It is a super-2 number, since 2×321041431² = 206135200837055522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321041399 and 321041408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321041437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160520715 + 160520716.

It is an arithmetic number, because the mean of its divisors is an integer number (160520716).

Almost surely, 2^321041431 is an apocalyptic number.

321041431 is a deficient number, since it is larger than the sum of its proper divisors (1).

321041431 is an equidigital number, since it uses as much as digits as its factorization.

321041431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 321041431 is about 17917.6290563233. The cubic root of 321041431 is about 684.7315843237.

Adding to 321041431 its reverse (134140123), we get a palindrome (455181554).

The spelling of 321041431 in words is "three hundred twenty-one million, forty-one thousand, four hundred thirty-one".