123152331 has 4 divisors (see below), whose sum is σ = 164203112. Its totient is φ = 82101552.

The previous prime is 123152321. The next prime is 123152333. The reversal of 123152331 is 133251321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123152331 - 2⁷ = 123152203 is a prime.

It is a super-2 number, since 2×123152331² = 30332993261467122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123152298 and 123152307.

It is not an unprimeable number, because it can be changed into a prime (123152333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20525386 + ... + 20525391.

It is an arithmetic number, because the mean of its divisors is an integer number (41050778).

Almost surely, 2^123152331 is an apocalyptic number.

123152331 is a deficient number, since it is larger than the sum of its proper divisors (41050781).

123152331 is an equidigital number, since it uses as much as digits as its factorization.

123152331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41050780.

The product of its digits is 540, while the sum is 21.

The square root of 123152331 is about 11097.4019932595. The cubic root of 123152331 is about 497.5242024201.

The spelling of 123152331 in words is "one hundred twenty-three million, one hundred fifty-two thousand, three hundred thirty-one".