616306431 has 16 divisors (see below), whose sum is σ = 885549056. Its totient is φ = 379010016.

The previous prime is 616306421. The next prime is 616306433. The reversal of 616306431 is 134603616.

It is not a de Polignac number, because 616306431 - 2¹³ = 616298239 is a prime.

It is a super-2 number, since 2×616306431² = 759667233783915522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616306433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65106 + ... + 73968.

It is an arithmetic number, because the mean of its divisors is an integer number (55346816).

Almost surely, 2^616306431 is an apocalyptic number.

616306431 is a deficient number, since it is larger than the sum of its proper divisors (269242625).

616306431 is a wasteful number, since it uses less digits than its factorization.

616306431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10662.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 616306431 is about 24825.5197528672. The cubic root of 616306431 is about 851.0052379243.

The spelling of 616306431 in words is "six hundred sixteen million, three hundred six thousand, four hundred thirty-one".