1315620100 has 36 divisors (see below), whose sum is σ = 2932063204. Its totient is φ = 512023680.

The previous prime is 1315620091. The next prime is 1315620109. The reversal of 1315620100 is 10265131.

It is an interprime number because it is at equal distance from previous prime (1315620091) and next prime (1315620109).

It can be written as a sum of positive squares in 6 ways, for example, as 55086084 + 1260534016 = 7422^2 + 35504^2 .

It is not an unprimeable number, because it can be changed into a prime (1315620109) 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 11 ways as a sum of consecutive naturals, for example, 174087 + ... + 181486.

Almost surely, 2^1315620100 is an apocalyptic number.

1315620100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315620100 is an abundant number, since it is smaller than the sum of its proper divisors (1616443104).

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

1315620100 is a wasteful number, since it uses less digits than its factorization.

1315620100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355624 (or 355617 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1315620100 is about 36271.4777752437. The cubic root of 1315620100 is about 1095.7466880881.

Adding to 1315620100 its reverse (10265131), we get a palindrome (1325885231).

The spelling of 1315620100 in words is "one billion, three hundred fifteen million, six hundred twenty thousand, one hundred".