1921134323 has 2 divisors, whose sum is σ = 1921134324. Its totient is φ = 1921134322.

The previous prime is 1921134269. The next prime is 1921134343. The reversal of 1921134323 is 3234311291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1921134323 - 2⁸ = 1921134067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1921134343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960567161 + 960567162.

It is an arithmetic number, because the mean of its divisors is an integer number (960567162).

Almost surely, 2^1921134323 is an apocalyptic number.

1921134323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921134323 is an equidigital number, since it uses as much as digits as its factorization.

1921134323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 1921134323 is about 43830.7463203628. The cubic root of 1921134323 is about 1243.1377184525.

The spelling of 1921134323 in words is "one billion, nine hundred twenty-one million, one hundred thirty-four thousand, three hundred twenty-three".