123883531 has 2 divisors, whose sum is σ = 123883532. Its totient is φ = 123883530.

The previous prime is 123883481. The next prime is 123883549. The reversal of 123883531 is 135388321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123883531 is a prime.

It is a super-2 number, since 2×123883531² = 30694258506055922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123883231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61941765 + 61941766.

It is an arithmetic number, because the mean of its divisors is an integer number (61941766).

Almost surely, 2^123883531 is an apocalyptic number.

123883531 is a deficient number, since it is larger than the sum of its proper divisors (1).

123883531 is an equidigital number, since it uses as much as digits as its factorization.

123883531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 123883531 is about 11130.2978846031. The cubic root of 123883531 is about 498.5069205321.

The spelling of 123883531 in words is "one hundred twenty-three million, eight hundred eighty-three thousand, five hundred thirty-one".