1616340232531 has 32 divisors (see below), whose sum is σ = 1684841932800. Its totient is φ = 1548962922240.

The previous prime is 1616340232517. The next prime is 1616340232547. The reversal of 1616340232531 is 1352320436161.

It is a cyclic number.

It is not a de Polignac number, because 1616340232531 - 2⁹ = 1616340232019 is a prime.

It is a super-2 number, since 2×1616340232531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616340232501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1431655975 + ... + 1431657103.

It is an arithmetic number, because the mean of its divisors is an integer number (52651310400).

Almost surely, 2^{1616340232531} is an apocalyptic number.

1616340232531 is a deficient number, since it is larger than the sum of its proper divisors (68501700269).

1616340232531 is a wasteful number, since it uses less digits than its factorization.

1616340232531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 1616340232531 its reverse (1352320436161), we get a palindrome (2968660668692).

The spelling of 1616340232531 in words is "one trillion, six hundred sixteen billion, three hundred forty million, two hundred thirty-two thousand, five hundred thirty-one".