123971319 has 12 divisors (see below), whose sum is σ = 179170992. Its totient is φ = 82600800.

The previous prime is 123971297. The next prime is 123971347. The reversal of 123971319 is 913179321.

It is a happy number.

It is not a de Polignac number, because 123971319 - 2¹¹ = 123969271 is a prime.

It is a super-2 number, since 2×123971319² = 30737775869199522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123971359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21859 + ... + 26939.

It is an arithmetic number, because the mean of its divisors is an integer number (14930916).

Almost surely, 2^123971319 is an apocalyptic number.

123971319 is a deficient number, since it is larger than the sum of its proper divisors (55199673).

123971319 is a wasteful number, since it uses less digits than its factorization.

123971319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7798 (or 7795 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 123971319 is about 11134.2408362672. The cubic root of 123971319 is about 498.6246456027.

The spelling of 123971319 in words is "one hundred twenty-three million, nine hundred seventy-one thousand, three hundred nineteen".