124013531 has 4 divisors (see below), whose sum is σ = 124066152. Its totient is φ = 123960912.

The previous prime is 124013509. The next prime is 124013563. The reversal of 124013531 is 135310421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135310421 = 3259 ⋅41519.

It is a cyclic number.

It is not a de Polignac number, because 124013531 - 2⁶ = 124013467 is a prime.

It is a super-2 number, since 2×124013531² = 30758711742175922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124013581) 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, 22601 + ... + 27546.

It is an arithmetic number, because the mean of its divisors is an integer number (31016538).

Almost surely, 2^124013531 is an apocalyptic number.

124013531 is a deficient number, since it is larger than the sum of its proper divisors (52621).

124013531 is an equidigital number, since it uses as much as digits as its factorization.

124013531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52620.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 124013531 is about 11136.1362689220. The cubic root of 124013531 is about 498.6812327640.

Adding to 124013531 its reverse (135310421), we get a palindrome (259323952).

The spelling of 124013531 in words is "one hundred twenty-four million, thirteen thousand, five hundred thirty-one".