616431024431 has 4 divisors (see below), whose sum is σ = 616850081664. Its totient is φ = 616011967200.

The previous prime is 616431024389. The next prime is 616431024437. The reversal of 616431024431 is 134420134616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616431024431 - 2⁶ = 616431024367 is a prime.

It is a super-2 number, since 2×616431024431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 616431024391 and 616431024400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616431024437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209526410 + ... + 209529351.

It is an arithmetic number, because the mean of its divisors is an integer number (154212520416).

Almost surely, 2^616431024431 is an apocalyptic number.

616431024431 is a deficient number, since it is larger than the sum of its proper divisors (419057233).

616431024431 is a wasteful number, since it uses less digits than its factorization.

616431024431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419057232.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 616431024431 in words is "six hundred sixteen billion, four hundred thirty-one million, twenty-four thousand, four hundred thirty-one".