31023061 has 2 divisors, whose sum is σ = 31023062. Its totient is φ = 31023060.

The previous prime is 31023053. The next prime is 31023071. The reversal of 31023061 is 16032013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 5712100 = 5031^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023061 - 2³ = 31023053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511530 + 15511531.

It is an arithmetic number, because the mean of its divisors is an integer number (15511531).

Almost surely, 2^31023061 is an apocalyptic number.

It is an amenable number.

31023061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023061 is an equidigital number, since it uses as much as digits as its factorization.

31023061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 31023061 is about 5569.8349167637. The cubic root of 31023061 is about 314.2159420381.

Adding to 31023061 its reverse (16032013), we get a palindrome (47055074).

The spelling of 31023061 in words is "thirty-one million, twenty-three thousand, sixty-one".