123513356 has 6 divisors (see below), whose sum is σ = 216148380. Its totient is φ = 61756676.

The previous prime is 123513311. The next prime is 123513359. The reversal of 123513356 is 653315321.

It is a super-2 number, since 2×123513356² = 30511098220765472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123513359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15439166 + ... + 15439173.

It is an arithmetic number, because the mean of its divisors is an integer number (36024730).

Almost surely, 2^123513356 is an apocalyptic number.

It is an amenable number.

123513356 is a deficient number, since it is larger than the sum of its proper divisors (92635024).

123513356 is a wasteful number, since it uses less digits than its factorization.

123513356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30878343 (or 30878341 counting only the distinct ones).

The product of its digits is 8100, while the sum is 29.

The square root of 123513356 is about 11113.6562840498. The cubic root of 123513356 is about 498.0098974931.

Adding to 123513356 its reverse (653315321), we get a palindrome (776828677).

The spelling of 123513356 in words is "one hundred twenty-three million, five hundred thirteen thousand, three hundred fifty-six".