2151123023 has 8 divisors (see below), whose sum is σ = 2459372160. Its totient is φ = 1843110360.

The previous prime is 2151123017. The next prime is 2151123041. The reversal of 2151123023 is 3203211512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2151123023 - 2⁶ = 2151122959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151122986 and 2151123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151123043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39173 + ... + 76398.

It is an arithmetic number, because the mean of its divisors is an integer number (307421520).

Almost surely, 2^2151123023 is an apocalyptic number.

2151123023 is a deficient number, since it is larger than the sum of its proper divisors (308249137).

2151123023 is a wasteful number, since it uses less digits than its factorization.

2151123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118237.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2151123023 is about 46380.2007649816. The cubic root of 2151123023 is about 1290.8875615745.

Adding to 2151123023 its reverse (3203211512), we get a palindrome (5354334535).

The spelling of 2151123023 in words is "two billion, one hundred fifty-one million, one hundred twenty-three thousand, twenty-three".