2153623231 has 2 divisors, whose sum is σ = 2153623232. Its totient is φ = 2153623230.

The previous prime is 2153623207. The next prime is 2153623261. The reversal of 2153623231 is 1323263512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2153623231 - 2²¹ = 2151526079 is a prime.

It is a super-3 number, since 3×2153623231³ (a number of 29 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 2153623231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153623261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076811615 + 1076811616.

It is an arithmetic number, because the mean of its divisors is an integer number (1076811616).

Almost surely, 2^2153623231 is an apocalyptic number.

2153623231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153623231 is an equidigital number, since it uses as much as digits as its factorization.

2153623231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 2153623231 is about 46407.1463354514. The cubic root of 2153623231 is about 1291.3874923495.

Adding to 2153623231 its reverse (1323263512), we get a palindrome (3476886743).

The spelling of 2153623231 in words is "two billion, one hundred fifty-three million, six hundred twenty-three thousand, two hundred thirty-one".