123773913 has 10 divisors (see below), whose sum is σ = 184896954. Its totient is φ = 82515888.

The previous prime is 123773911. The next prime is 123773927. The reversal of 123773913 is 319377321.

It can be written as a sum of positive squares in only one way, i.e., 85433049 + 38340864 = 9243^2 + 6192^2 .

It is not a de Polignac number, because 123773913 - 2¹ = 123773911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123773911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 763956 + ... + 764117.

Almost surely, 2^123773913 is an apocalyptic number.

It is an amenable number.

123773913 is a deficient number, since it is larger than the sum of its proper divisors (61123041).

123773913 is an equidigital number, since it uses as much as digits as its factorization.

123773913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528085 (or 1528076 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 123773913 is about 11125.3724881462. The cubic root of 123773913 is about 498.3598429862.

It can be divided in two parts, 12377 and 3913, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 123773913 in words is "one hundred twenty-three million, seven hundred seventy-three thousand, nine hundred thirteen".