616345431 has 16 divisors (see below), whose sum is σ = 887341056. Its totient is φ = 378290016.

The previous prime is 616345423. The next prime is 616345453. The reversal of 616345431 is 134543616.

It is not a de Polignac number, because 616345431 - 2³ = 616345423 is a prime.

It is a super-2 number, since 2×616345431² = 759763380629151522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 616345392 and 616345401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616345481) 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, 5695 + ... + 35568.

It is an arithmetic number, because the mean of its divisors is an integer number (55458816).

Almost surely, 2^616345431 is an apocalyptic number.

616345431 is a deficient number, since it is larger than the sum of its proper divisors (270995625).

616345431 is a wasteful number, since it uses less digits than its factorization.

616345431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41662.

The product of its digits is 25920, while the sum is 33.

The square root of 616345431 is about 24826.3052224853. The cubic root of 616345431 is about 851.0231881422.

The spelling of 616345431 in words is "six hundred sixteen million, three hundred forty-five thousand, four hundred thirty-one".