1301631040 has 28 divisors (see below), whose sum is σ = 3099509676. Its totient is φ = 520652288.

The previous prime is 1301631011. The next prime is 1301631047. The reversal of 1301631040 is 401361031.

It can be written as a sum of positive squares in 2 ways, for example, as 227889216 + 1073741824 = 15096^2 + 32768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1301630999 and 1301631017.

It is not an unprimeable number, because it can be changed into a prime (1301631047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033479 + ... + 2034118.

Almost surely, 2^1301631040 is an apocalyptic number.

1301631040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301631040 is an abundant number, since it is smaller than the sum of its proper divisors (1797878636).

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

1301631040 is an equidigital number, since it uses as much as digits as its factorization.

1301631040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067614 (or 4067604 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1301631040 is about 36078.1241197488. The cubic root of 1301631040 is about 1091.8491295993.

Adding to 1301631040 its reverse (401361031), we get a palindrome (1702992071).

The spelling of 1301631040 in words is "one billion, three hundred one million, six hundred thirty-one thousand, forty".