2145131512 has 16 divisors (see below), whose sum is σ = 4107699360. Its totient is φ = 1049745024.

The previous prime is 2145131491. The next prime is 2145131531. The reversal of 2145131512 is 2151315412.

It is a super-2 number, since 2×2145131512² = 9203178407550812288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852193 + ... + 2852944.

It is an arithmetic number, because the mean of its divisors is an integer number (256731210).

Almost surely, 2^2145131512 is an apocalyptic number.

It is an amenable number.

2145131512 is a deficient number, since it is larger than the sum of its proper divisors (1962567848).

2145131512 is a wasteful number, since it uses less digits than its factorization.

2145131512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705190 (or 5705186 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 2145131512 is about 46315.5644681137. The cubic root of 2145131512 is about 1289.6879464735.

Adding to 2145131512 its reverse (2151315412), we get a palindrome (4296446924).

The spelling of 2145131512 in words is "two billion, one hundred forty-five million, one hundred thirty-one thousand, five hundred twelve".