1023123947 has 2 divisors, whose sum is σ = 1023123948. Its totient is φ = 1023123946.

The previous prime is 1023123931. The next prime is 1023123949. The reversal of 1023123947 is 7493213201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023123947 - 2⁴ = 1023123931 is a prime.

It is a super-2 number, since 2×1023123947² = 2093565221849717618, which contains 22 as substring.

Together with 1023123949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1023123949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511561973 + 511561974.

It is an arithmetic number, because the mean of its divisors is an integer number (511561974).

Almost surely, 2^1023123947 is an apocalyptic number.

1023123947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023123947 is an equidigital number, since it uses as much as digits as its factorization.

1023123947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1023123947 is about 31986.3087429606. The cubic root of 1023123947 is about 1007.6493210285.

The spelling of 1023123947 in words is "one billion, twenty-three million, one hundred twenty-three thousand, nine hundred forty-seven".