2145143222031 has 16 divisors (see below), whose sum is σ = 2930700003840. Its totient is φ = 1394858777280.

The previous prime is 2145143221993. The next prime is 2145143222041. The reversal of 2145143222031 is 1302223415412.

It is a happy number.

It is not a de Polignac number, because 2145143222031 - 2⁹ = 2145143221519 is a prime.

It is a super-2 number, since 2×2145143222031² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2145143222031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145143222041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743045 + ... + 2707118.

It is an arithmetic number, because the mean of its divisors is an integer number (183168750240).

Almost surely, 2^{2145143222031} is an apocalyptic number.

2145143222031 is a deficient number, since it is larger than the sum of its proper divisors (785556781809).

2145143222031 is a wasteful number, since it uses less digits than its factorization.

2145143222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454126.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 2145143222031 its reverse (1302223415412), we get a palindrome (3447366637443).

The spelling of 2145143222031 in words is "two trillion, one hundred forty-five billion, one hundred forty-three million, two hundred twenty-two thousand, thirty-one".