2151249223 has 2 divisors, whose sum is σ = 2151249224. Its totient is φ = 2151249222.

The previous prime is 2151249187. The next prime is 2151249239. The reversal of 2151249223 is 3229421512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151249223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151249323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075624611 + 1075624612.

It is an arithmetic number, because the mean of its divisors is an integer number (1075624612).

Almost surely, 2^2151249223 is an apocalyptic number.

2151249223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151249223 is an equidigital number, since it uses as much as digits as its factorization.

2151249223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 2151249223 is about 46381.5612393546. The cubic root of 2151249223 is about 1290.9128052608.

The spelling of 2151249223 in words is "two billion, one hundred fifty-one million, two hundred forty-nine thousand, two hundred twenty-three".