2131045145 has 16 divisors (see below), whose sum is σ = 2591880960. Its totient is φ = 1681789824.

The previous prime is 2131045123. The next prime is 2131045153. The reversal of 2131045145 is 5415401312.

It is a cyclic number.

It is not a de Polignac number, because 2131045145 - 2⁸ = 2131044889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785882 + ... + 788588.

It is an arithmetic number, because the mean of its divisors is an integer number (161992560).

Almost surely, 2^2131045145 is an apocalyptic number.

It is an amenable number.

2131045145 is a deficient number, since it is larger than the sum of its proper divisors (460835815).

2131045145 is a wasteful number, since it uses less digits than its factorization.

2131045145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2131045145 is about 46163.2445241883. The cubic root of 2131045145 is about 1286.8587603328.

Adding to 2131045145 its reverse (5415401312), we get a palindrome (7546446457).

The spelling of 2131045145 in words is "two billion, one hundred thirty-one million, forty-five thousand, one hundred forty-five".