123917001011 has 4 divisors (see below), whose sum is σ = 124274110872. Its totient is φ = 123559891152.

The previous prime is 123917000969. The next prime is 123917001017. The reversal of 123917001011 is 110100719321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123917001011 - 2⁶ = 123917000947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123917001017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178554410 + ... + 178555103.

It is an arithmetic number, because the mean of its divisors is an integer number (31068527718).

Almost surely, 2^123917001011 is an apocalyptic number.

123917001011 is a deficient number, since it is larger than the sum of its proper divisors (357109861).

123917001011 is an equidigital number, since it uses as much as digits as its factorization.

123917001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357109860.

The product of its (nonzero) digits is 378, while the sum is 26.

The spelling of 123917001011 in words is "one hundred twenty-three billion, nine hundred seventeen million, one thousand, eleven".