123734531 has 2 divisors, whose sum is σ = 123734532. Its totient is φ = 123734530.

The previous prime is 123734519. The next prime is 123734537. The reversal of 123734531 is 135437321.

It is a strong prime.

It is an emirp because it is prime and its reverse (135437321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123734531 - 2¹⁰ = 123733507 is a prime.

It is a super-2 number, since 2×123734531² = 30620468323579922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123734494 and 123734503.

It is not a weakly prime, because it can be changed into another prime (123734537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61867265 + 61867266.

It is an arithmetic number, because the mean of its divisors is an integer number (61867266).

Almost surely, 2^123734531 is an apocalyptic number.

123734531 is a deficient number, since it is larger than the sum of its proper divisors (1).

123734531 is an equidigital number, since it uses as much as digits as its factorization.

123734531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 29.

The square root of 123734531 is about 11123.6024290695. The cubic root of 123734531 is about 498.3069818494.

The spelling of 123734531 in words is "one hundred twenty-three million, seven hundred thirty-four thousand, five hundred thirty-one".