31454513 has 2 divisors, whose sum is σ = 31454514. Its totient is φ = 31454512.

The previous prime is 31454497. The next prime is 31454587. The reversal of 31454513 is 31545413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29073664 + 2380849 = 5392^2 + 1543^2 .

It is a cyclic number.

It is not a de Polignac number, because 31454513 - 2⁴ = 31454497 is a prime.

It is not a weakly prime, because it can be changed into another prime (31457513) 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, 15727256 + 15727257.

It is an arithmetic number, because the mean of its divisors is an integer number (15727257).

Almost surely, 2^31454513 is an apocalyptic number.

It is an amenable number.

31454513 is a deficient number, since it is larger than the sum of its proper divisors (1).

31454513 is an equidigital number, since it uses as much as digits as its factorization.

31454513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 31454513 is about 5608.4323121528. The cubic root of 31454513 is about 315.6658895886.

Adding to 31454513 its reverse (31545413), we get a palindrome (62999926).

The spelling of 31454513 in words is "thirty-one million, four hundred fifty-four thousand, five hundred thirteen".