431501401 has 2 divisors, whose sum is σ = 431501402. Its totient is φ = 431501400.

The previous prime is 431501383. The next prime is 431501443. The reversal of 431501401 is 104105134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411116176 + 20385225 = 20276^2 + 4515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431501401 is a prime.

It is not a weakly prime, because it can be changed into another prime (431541401) 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, 215750700 + 215750701.

It is an arithmetic number, because the mean of its divisors is an integer number (215750701).

Almost surely, 2^431501401 is an apocalyptic number.

It is an amenable number.

431501401 is a deficient number, since it is larger than the sum of its proper divisors (1).

431501401 is an equidigital number, since it uses as much as digits as its factorization.

431501401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 431501401 is about 20772.6118001565. The cubic root of 431501401 is about 755.6616867837.

Adding to 431501401 its reverse (104105134), we get a palindrome (535606535).

It can be divided in two parts, 43150 and 1401, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 431501401 in words is "four hundred thirty-one million, five hundred one thousand, four hundred one".