969781123 has 2 divisors, whose sum is σ = 969781124. Its totient is φ = 969781122.

The previous prime is 969781117. The next prime is 969781151. The reversal of 969781123 is 321187969.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321187969) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 969781123 - 2⁹ = 969780611 is a prime.

It is a super-2 number, since 2×969781123² = 1880950853054282258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (969781823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484890561 + 484890562.

It is an arithmetic number, because the mean of its divisors is an integer number (484890562).

Almost surely, 2^969781123 is an apocalyptic number.

969781123 is a deficient number, since it is larger than the sum of its proper divisors (1).

969781123 is an equidigital number, since it uses as much as digits as its factorization.

969781123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 969781123 is about 31141.3089480837. The cubic root of 969781123 is about 989.8238379884.

The spelling of 969781123 in words is "nine hundred sixty-nine million, seven hundred eighty-one thousand, one hundred twenty-three".