123034531 has 4 divisors (see below), whose sum is σ = 123309000. Its totient is φ = 122760064.

The previous prime is 123034517. The next prime is 123034543. The reversal of 123034531 is 135430321.

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

It is a cyclic number.

It is not a de Polignac number, because 123034531 - 2⁷ = 123034403 is a prime.

It is a super-2 number, since 2×123034531² = 30274991636779922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123034511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136561 + ... + 137458.

It is an arithmetic number, because the mean of its divisors is an integer number (30827250).

Almost surely, 2^123034531 is an apocalyptic number.

123034531 is a deficient number, since it is larger than the sum of its proper divisors (274469).

123034531 is an equidigital number, since it uses as much as digits as its factorization.

123034531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274468.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 123034531 is about 11092.0931748701. The cubic root of 123034531 is about 497.3655180559.

Adding to 123034531 its reverse (135430321), we get a palindrome (258464852).

The spelling of 123034531 in words is "one hundred twenty-three million, thirty-four thousand, five hundred thirty-one".