31971341 has 2 divisors, whose sum is σ = 31971342. Its totient is φ = 31971340.

The previous prime is 31971307. The next prime is 31971383. The reversal of 31971341 is 14317913.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31922500 + 48841 = 5650^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 31971341 - 2¹⁴ = 31954957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31971391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15985670 + 15985671.

It is an arithmetic number, because the mean of its divisors is an integer number (15985671).

Almost surely, 2^31971341 is an apocalyptic number.

It is an amenable number.

31971341 is a deficient number, since it is larger than the sum of its proper divisors (1).

31971341 is an equidigital number, since it uses as much as digits as its factorization.

31971341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 31971341 is about 5654.3205604210. The cubic root of 31971341 is about 317.3854043214.

The spelling of 31971341 in words is "thirty-one million, nine hundred seventy-one thousand, three hundred forty-one".