31572341 has 2 divisors, whose sum is σ = 31572342. Its totient is φ = 31572340.

The previous prime is 31572323. The next prime is 31572347. The reversal of 31572341 is 14327513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28665316 + 2907025 = 5354^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 31572341 - 2¹⁴ = 31555957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31572341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31572347) 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, 15786170 + 15786171.

It is an arithmetic number, because the mean of its divisors is an integer number (15786171).

Almost surely, 2^31572341 is an apocalyptic number.

It is an amenable number.

31572341 is a deficient number, since it is larger than the sum of its proper divisors (1).

31572341 is an equidigital number, since it uses as much as digits as its factorization.

31572341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 31572341 is about 5618.9270328062. The cubic root of 31572341 is about 316.0595578870.

Adding to 31572341 its reverse (14327513), we get a palindrome (45899854).

It can be divided in two parts, 31572 and 341, that added together give a palindrome (31913).

The spelling of 31572341 in words is "thirty-one million, five hundred seventy-two thousand, three hundred forty-one".