1231725108 has 24 divisors (see below), whose sum is σ = 2966736640. Its totient is φ = 397330560.

The previous prime is 1231725107. The next prime is 1231725127. The reversal of 1231725108 is 8015271321.

It is a super-2 number, since 2×1231725108² = 3034293483355223328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231725107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655173 + ... + 1655916.

Almost surely, 2^1231725108 is an apocalyptic number.

It is an amenable number.

1231725108 is an abundant number, since it is smaller than the sum of its proper divisors (1735011532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231725108 is a wasteful number, since it uses less digits than its factorization.

1231725108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311127 (or 3311125 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1231725108 is about 35095.9414747631. The cubic root of 1231725108 is about 1071.9419440695.

Adding to 1231725108 its reverse (8015271321), we get a palindrome (9246996429).

The spelling of 1231725108 in words is "one billion, two hundred thirty-one million, seven hundred twenty-five thousand, one hundred eight".