31483789 has 2 divisors, whose sum is σ = 31483790. Its totient is φ = 31483788.

The previous prime is 31483759. The next prime is 31483799. The reversal of 31483789 is 98738413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 2377764 = 5395^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 31483789 - 2¹³ = 31475597 is a prime.

It is equal to p_1943899 and since 31483789 and 1943899 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31483759) 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, 15741894 + 15741895.

It is an arithmetic number, because the mean of its divisors is an integer number (15741895).

Almost surely, 2^31483789 is an apocalyptic number.

It is an amenable number.

31483789 is a deficient number, since it is larger than the sum of its proper divisors (1).

31483789 is an equidigital number, since it uses as much as digits as its factorization.

31483789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 31483789 is about 5611.0417036411. The cubic root of 31483789 is about 315.7637935994.

The spelling of 31483789 in words is "thirty-one million, four hundred eighty-three thousand, seven hundred eighty-nine".