124231309381 has 4 divisors (see below), whose sum is σ = 124234958592. Its totient is φ = 124227660172.

The previous prime is 124231309379. The next prime is 124231309387. The reversal of 124231309381 is 183903132421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183903132421 = 20983 ⋅8764387.

It is a cyclic number.

It is not a de Polignac number, because 124231309381 - 2¹ = 124231309379 is a prime.

It is a super-2 number, since 2×124231309381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124231309381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124231309387) 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, 1773055 + ... + 1841788.

It is an arithmetic number, because the mean of its divisors is an integer number (31058739648).

Almost surely, 2^124231309381 is an apocalyptic number.

It is an amenable number.

124231309381 is a deficient number, since it is larger than the sum of its proper divisors (3649211).

124231309381 is an equidigital number, since it uses as much as digits as its factorization.

124231309381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649210.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 124231309381 in words is "one hundred twenty-four billion, two hundred thirty-one million, three hundred nine thousand, three hundred eighty-one".