123651113 has 4 divisors (see below), whose sum is σ = 125496720. Its totient is φ = 121805508.

The previous prime is 123651103. The next prime is 123651193. The reversal of 123651113 is 311156321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123651113 - 2¹⁶ = 123585577 is a prime.

It is a super-2 number, since 2×123651113² = 30579195492277538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123651103) 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, 922703 + ... + 922836.

It is an arithmetic number, because the mean of its divisors is an integer number (31374180).

Almost surely, 2^123651113 is an apocalyptic number.

It is an amenable number.

123651113 is a deficient number, since it is larger than the sum of its proper divisors (1845607).

123651113 is an equidigital number, since it uses as much as digits as its factorization.

123651113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845606.

The product of its digits is 540, while the sum is 23.

The square root of 123651113 is about 11119.8522022552. The cubic root of 123651113 is about 498.1949756152.

The spelling of 123651113 in words is "one hundred twenty-three million, six hundred fifty-one thousand, one hundred thirteen".