1231677448 has 8 divisors (see below), whose sum is σ = 2309395230. Its totient is φ = 615838720.

The previous prime is 1231677427. The next prime is 1231677449. The reversal of 1231677448 is 8447761321.

It can be written as a sum of positive squares in only one way, i.e., 1069420804 + 162256644 = 32702^2 + 12738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1231677449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76979833 + ... + 76979848.

Almost surely, 2^1231677448 is an apocalyptic number.

It is an amenable number.

1231677448 is a deficient number, since it is larger than the sum of its proper divisors (1077717782).

1231677448 is a wasteful number, since it uses less digits than its factorization.

1231677448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153959687 (or 153959683 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 1231677448 is about 35095.2624723053. The cubic root of 1231677448 is about 1071.9281180917.

The spelling of 1231677448 in words is "one billion, two hundred thirty-one million, six hundred seventy-seven thousand, four hundred forty-eight".