2031215145 has 16 divisors (see below), whose sum is σ = 3294465792. Its totient is φ = 1068474240.

The previous prime is 2031215143. The next prime is 2031215161. The reversal of 2031215145 is 5415121302.

It is a happy number.

It is not a de Polignac number, because 2031215145 - 2¹ = 2031215143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2031215143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926401 + ... + 928590.

It is an arithmetic number, because the mean of its divisors is an integer number (205904112).

Almost surely, 2^2031215145 is an apocalyptic number.

It is an amenable number.

2031215145 is a deficient number, since it is larger than the sum of its proper divisors (1263250647).

2031215145 is a wasteful number, since it uses less digits than its factorization.

2031215145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855072.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2031215145 is about 45069.0042601343. The cubic root of 2031215145 is about 1266.4420109038.

Adding to 2031215145 its reverse (5415121302), we get a palindrome (7446336447).

The spelling of 2031215145 in words is "two billion, thirty-one million, two hundred fifteen thousand, one hundred forty-five".