1513131020 has 24 divisors (see below), whose sum is σ = 3205700064. Its totient is φ = 599895296.

The previous prime is 1513131017. The next prime is 1513131023. The reversal of 1513131020 is 201313151.

It is an interprime number because it is at equal distance from previous prime (1513131017) and next prime (1513131023).

It is a self number, because there is not a number n which added to its sum of digits gives 1513131020.

It is not an unprimeable number, because it can be changed into a prime (1513131023) 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 7 ways as a sum of consecutive naturals, for example, 332504 + ... + 337023.

It is an arithmetic number, because the mean of its divisors is an integer number (133570836).

Almost surely, 2^1513131020 is an apocalyptic number.

1513131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1513131020 is an abundant number, since it is smaller than the sum of its proper divisors (1692569044).

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

1513131020 is a wasteful number, since it uses less digits than its factorization.

1513131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669649 (or 669647 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1513131020 is about 38898.9848196582. The cubic root of 1513131020 is about 1148.0448239731.

Adding to 1513131020 its reverse (201313151), we get a palindrome (1714444171).

The spelling of 1513131020 in words is "one billion, five hundred thirteen million, one hundred thirty-one thousand, twenty".