624312349 has 2 divisors, whose sum is σ = 624312350. Its totient is φ = 624312348.

The previous prime is 624312343. The next prime is 624312397. The reversal of 624312349 is 943213426.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581147449 + 43164900 = 24107^2 + 6570^2 .

It is a cyclic number.

It is not a de Polignac number, because 624312349 - 2⁹ = 624311837 is a prime.

It is a super-2 number, since 2×624312349² = 779531818227795602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624312343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312156174 + 312156175.

It is an arithmetic number, because the mean of its divisors is an integer number (312156175).

Almost surely, 2^624312349 is an apocalyptic number.

It is an amenable number.

624312349 is a deficient number, since it is larger than the sum of its proper divisors (1).

624312349 is an equidigital number, since it uses as much as digits as its factorization.

624312349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 624312349 is about 24986.2431950063. The cubic root of 624312349 is about 854.6742938239.

The spelling of 624312349 in words is "six hundred twenty-four million, three hundred twelve thousand, three hundred forty-nine".