2123354997 has 12 divisors (see below), whose sum is σ = 3078473580. Its totient is φ = 1410306048.

The previous prime is 2123354977. The next prime is 2123355019. The reversal of 2123354997 is 7994533212.

2123354997 is a `hidden beast` number, since 2 + 12 + 3 + 3 + 549 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1265509476 + 857845521 = 35574^2 + 29289^2 .

It is not a de Polignac number, because 2123354997 - 2¹¹ = 2123352949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123354977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436108 + ... + 440949.

It is an arithmetic number, because the mean of its divisors is an integer number (256539465).

Almost surely, 2^2123354997 is an apocalyptic number.

It is an amenable number.

2123354997 is a deficient number, since it is larger than the sum of its proper divisors (955118583).

2123354997 is a wasteful number, since it uses less digits than its factorization.

2123354997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877332 (or 877329 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 2123354997 is about 46079.8762693651. The cubic root of 2123354997 is about 1285.3089633411.

The spelling of 2123354997 in words is "two billion, one hundred twenty-three million, three hundred fifty-four thousand, nine hundred ninety-seven".