2154231523 has 2 divisors, whose sum is σ = 2154231524. Its totient is φ = 2154231522.

The previous prime is 2154231479. The next prime is 2154231529. The reversal of 2154231523 is 3251324512.

2154231523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154231523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154231491 and 2154231500.

It is not a weakly prime, because it can be changed into another prime (2154231529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077115761 + 1077115762.

It is an arithmetic number, because the mean of its divisors is an integer number (1077115762).

Almost surely, 2^2154231523 is an apocalyptic number.

2154231523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154231523 is an equidigital number, since it uses as much as digits as its factorization.

2154231523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 2154231523 is about 46413.6997340225. The cubic root of 2154231523 is about 1291.5090652600.

The spelling of 2154231523 in words is "two billion, one hundred fifty-four million, two hundred thirty-one thousand, five hundred twenty-three".