1513112131 has 4 divisors (see below), whose sum is σ = 1516623264. Its totient is φ = 1509601000.

The previous prime is 1513112113. The next prime is 1513112143. The reversal of 1513112131 is 1312113151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312113151 = 35969 ⋅36479.

It is a cyclic number.

It is not a de Polignac number, because 1513112131 - 2⁹ = 1513111619 is a prime.

It is a super-2 number, since 2×1513112131² = 4579016641958722322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1513112099 and 1513112108.

It is not an unprimeable number, because it can be changed into a prime (1513112191) 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, 1754920 + ... + 1755781.

It is an arithmetic number, because the mean of its divisors is an integer number (379155816).

Almost surely, 2^1513112131 is an apocalyptic number.

1513112131 is a deficient number, since it is larger than the sum of its proper divisors (3511133).

1513112131 is an equidigital number, since it uses as much as digits as its factorization.

1513112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511132.

The product of its digits is 90, while the sum is 19.

The square root of 1513112131 is about 38898.7420233611. The cubic root of 1513112131 is about 1148.0400467906.

Adding to 1513112131 its reverse (1312113151), we get a palindrome (2825225282).

The spelling of 1513112131 in words is "one billion, five hundred thirteen million, one hundred twelve thousand, one hundred thirty-one".