2031501145 has 12 divisors (see below), whose sum is σ = 2518982820. Its totient is φ = 1572771360.

The previous prime is 2031501133. The next prime is 2031501161. The reversal of 2031501145 is 5411051302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1581891529 + 449609616 = 39773^2 + 21204^2 .

It is not a de Polignac number, because 2031501145 - 2⁹ = 2031500633 is a prime.

It is a super-2 number, since 2×2031501145² = 8253993804272622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206590 + ... + 216199.

It is an arithmetic number, because the mean of its divisors is an integer number (209915235).

Almost surely, 2^2031501145 is an apocalyptic number.

It is an amenable number.

2031501145 is a deficient number, since it is larger than the sum of its proper divisors (487481675).

2031501145 is an equidigital number, since it uses as much as digits as its factorization.

2031501145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422856 (or 422825 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2031501145 is about 45072.1770607988. The cubic root of 2031501145 is about 1266.5014474793.

Adding to 2031501145 its reverse (5411051302), we get a palindrome (7442552447).

The spelling of 2031501145 in words is "two billion, thirty-one million, five hundred one thousand, one hundred forty-five".