2031231345 has 32 divisors (see below), whose sum is σ = 3818150784. Its totient is φ = 909081600.

The previous prime is 2031231337. The next prime is 2031231353. The reversal of 2031231345 is 5431321302.

It is an interprime number because it is at equal distance from previous prime (2031231337) and next prime (2031231353).

It is not a de Polignac number, because 2031231345 - 2³ = 2031231337 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 471336 + ... + 475625.

It is an arithmetic number, because the mean of its divisors is an integer number (119317212).

Almost surely, 2^2031231345 is an apocalyptic number.

It is an amenable number.

2031231345 is a deficient number, since it is larger than the sum of its proper divisors (1786919439).

2031231345 is a wasteful number, since it uses less digits than its factorization.

2031231345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946993.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2031231345 is about 45069.1839841815. The cubic root of 2031231345 is about 1266.4453777400.

Adding to 2031231345 its reverse (5431321302), we get a palindrome (7462552647).

The spelling of 2031231345 in words is "two billion, thirty-one million, two hundred thirty-one thousand, three hundred forty-five".