1653540423231 has 16 divisors (see below), whose sum is σ = 2230422912000. Its totient is φ = 1089519444288.

The previous prime is 1653540423187. The next prime is 1653540423287. The reversal of 1653540423231 is 1323240453561.

It is not a de Polignac number, because 1653540423231 - 2³⁰ = 1652466681407 is a prime.

It is a super-3 number, since 3×1653540423231³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1653540423231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653540424231) 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, 650221 + ... + 1931286.

It is an arithmetic number, because the mean of its divisors is an integer number (139401432000).

Almost surely, 2^{1653540423231} is an apocalyptic number.

1653540423231 is a deficient number, since it is larger than the sum of its proper divisors (576882488769).

1653540423231 is a wasteful number, since it uses less digits than its factorization.

1653540423231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583998.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 1653540423231 its reverse (1323240453561), we get a palindrome (2976780876792).

The spelling of 1653540423231 in words is "one trillion, six hundred fifty-three billion, five hundred forty million, four hundred twenty-three thousand, two hundred thirty-one".