123115310 has 16 divisors (see below), whose sum is σ = 223893936. Its totient is φ = 48738048.

The previous prime is 123115271. The next prime is 123115313. The reversal of 123115310 is 13511321.

It is a super-2 number, since 2×123115310² = 30314759112792200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123115313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62492 + ... + 64431.

It is an arithmetic number, because the mean of its divisors is an integer number (13993371).

Almost surely, 2^123115310 is an apocalyptic number.

123115310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123115310 is a deficient number, since it is larger than the sum of its proper divisors (100778626).

123115310 is a wasteful number, since it uses less digits than its factorization.

123115310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127027.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 123115310 is about 11095.7338648690. The cubic root of 123115310 is about 497.4743436009.

Adding to 123115310 its reverse (13511321), we get a palindrome (136626631).

The spelling of 123115310 in words is "one hundred twenty-three million, one hundred fifteen thousand, three hundred ten".