2031115345 has 16 divisors (see below), whose sum is σ = 2803984128. Its totient is φ = 1383537600.

The previous prime is 2031115321. The next prime is 2031115351. The reversal of 2031115345 is 5435111302.

It is a happy number.

It is not a de Polignac number, because 2031115345 - 2⁵ = 2031115313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186874 + ... + 197443.

It is an arithmetic number, because the mean of its divisors is an integer number (175249008).

Almost surely, 2^2031115345 is an apocalyptic number.

It is an amenable number.

2031115345 is a deficient number, since it is larger than the sum of its proper divisors (772868783).

2031115345 is a wasteful number, since it uses less digits than its factorization.

2031115345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384480.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2031115345 is about 45067.8970554429. The cubic root of 2031115345 is about 1266.4212691354.

Adding to 2031115345 its reverse (5435111302), we get a palindrome (7466226647).

The spelling of 2031115345 in words is "two billion, thirty-one million, one hundred fifteen thousand, three hundred forty-five".