1313271632 has 20 divisors (see below), whose sum is σ = 2545861236. Its totient is φ = 656275200.

The previous prime is 1313271611. The next prime is 1313271637. The reversal of 1313271632 is 2361723131.

It can be written as a sum of positive squares in 2 ways, for example, as 410629696 + 902641936 = 20264^2 + 30044^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1313271595 and 1313271604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313271637) 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, 8828 + ... + 52004.

Almost surely, 2^1313271632 is an apocalyptic number.

It is an amenable number.

1313271632 is a deficient number, since it is larger than the sum of its proper divisors (1232589604).

1313271632 is a wasteful number, since it uses less digits than its factorization.

1313271632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45086 (or 45080 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 1313271632 is about 36239.0898340452. The cubic root of 1313271632 is about 1095.0943065639.

Adding to 1313271632 its reverse (2361723131), we get a palindrome (3674994763).

The spelling of 1313271632 in words is "one billion, three hundred thirteen million, two hundred seventy-one thousand, six hundred thirty-two".