31232141 has 2 divisors, whose sum is σ = 31232142. Its totient is φ = 31232140.

The previous prime is 31232087. The next prime is 31232171. The reversal of 31232141 is 14123213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 13169641 = 4250^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232141 - 2¹⁸ = 30969997 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 (31232171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616070 + 15616071.

It is an arithmetic number, because the mean of its divisors is an integer number (15616071).

Almost surely, 2^31232141 is an apocalyptic number.

It is an amenable number.

31232141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232141 is an equidigital number, since it uses as much as digits as its factorization.

31232141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 31232141 is about 5588.5723579462. The cubic root of 31232141 is about 314.9202485598.

Adding to 31232141 its reverse (14123213), we get a palindrome (45355354).

The spelling of 31232141 in words is "thirty-one million, two hundred thirty-two thousand, one hundred forty-one".