1313425540 has 96 divisors (see below), whose sum is σ = 3395589120. Its totient is φ = 416658816.

The previous prime is 1313425517. The next prime is 1313425541. The reversal of 1313425540 is 455243131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1313425499 and 1313425508.

It is not an unprimeable number, because it can be changed into a prime (1313425541) 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 31 ways as a sum of consecutive naturals, for example, 108639 + ... + 120121.

It is an arithmetic number, because the mean of its divisors is an integer number (35370720).

Almost surely, 2^1313425540 is an apocalyptic number.

1313425540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313425540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1697794560).

1313425540 is an abundant number, since it is smaller than the sum of its proper divisors (2082163580).

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

1313425540 is a wasteful number, since it uses less digits than its factorization.

1313425540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561 (or 11559 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1313425540 is about 36241.2132799110. The cubic root of 1313425540 is about 1095.1370845104.

Adding to 1313425540 its reverse (455243131), we get a palindrome (1768668671).

The spelling of 1313425540 in words is "one billion, three hundred thirteen million, four hundred twenty-five thousand, five hundred forty".