1143206565031 has 4 divisors (see below), whose sum is σ = 1144083931312. Its totient is φ = 1142329198752.

The previous prime is 1143206565023. The next prime is 1143206565043. The reversal of 1143206565031 is 1305656023411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143206565031 - 2³ = 1143206565023 is a prime.

It is a super-2 number, since 2×1143206565031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143206565331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438681186 + ... + 438683791.

It is an arithmetic number, because the mean of its divisors is an integer number (286020982828).

Almost surely, 2^{1143206565031} is an apocalyptic number.

1143206565031 is a deficient number, since it is larger than the sum of its proper divisors (877366281).

1143206565031 is an equidigital number, since it uses as much as digits as its factorization.

1143206565031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877366280.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 1143206565031 in words is "one trillion, one hundred forty-three billion, two hundred six million, five hundred sixty-five thousand, thirty-one".