31489541 has 2 divisors, whose sum is σ = 31489542. Its totient is φ = 31489540.

The previous prime is 31489519. The next prime is 31489571. The reversal of 31489541 is 14598413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 4605316 = 5185^2 + 2146^2 .

It is a cyclic number.

It is not a de Polignac number, because 31489541 - 2¹⁸ = 31227397 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 (31489571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15744770 + 15744771.

It is an arithmetic number, because the mean of its divisors is an integer number (15744771).

Almost surely, 2^31489541 is an apocalyptic number.

It is an amenable number.

31489541 is a deficient number, since it is larger than the sum of its proper divisors (1).

31489541 is an equidigital number, since it uses as much as digits as its factorization.

31489541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 31489541 is about 5611.5542410281. The cubic root of 31489541 is about 315.7830221484.

The spelling of 31489541 in words is "thirty-one million, four hundred eighty-nine thousand, five hundred forty-one".