1630513131 has 16 divisors (see below), whose sum is σ = 2341977120. Its totient is φ = 1003080960.

The previous prime is 1630513127. The next prime is 1630513141. The reversal of 1630513131 is 1313150361.

It is not a de Polignac number, because 1630513131 - 2² = 1630513127 is a prime.

It is a super-2 number, since 2×1630513131² = 5317146140726846322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1630513141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225805 + ... + 232913.

It is an arithmetic number, because the mean of its divisors is an integer number (146373570).

Almost surely, 2^1630513131 is an apocalyptic number.

1630513131 is a deficient number, since it is larger than the sum of its proper divisors (711463989).

1630513131 is a wasteful number, since it uses less digits than its factorization.

1630513131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13006.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1630513131 is about 40379.6128138941. The cubic root of 1630513131 is about 1176.9954037213.

Adding to 1630513131 its reverse (1313150361), we get a palindrome (2943663492).

The spelling of 1630513131 in words is "one billion, six hundred thirty million, five hundred thirteen thousand, one hundred thirty-one".