1143566311231 has 8 divisors (see below), whose sum is σ = 1210846112640. Its totient is φ = 1076287753728.

The previous prime is 1143566311187. The next prime is 1143566311241. The reversal of 1143566311231 is 1321136653411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143566311231 is a prime.

It is a super-2 number, since 2×1143566311231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143566311241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2128690 + ... + 2611216.

It is an arithmetic number, because the mean of its divisors is an integer number (151355764080).

Almost surely, 2^{1143566311231} is an apocalyptic number.

1143566311231 is a deficient number, since it is larger than the sum of its proper divisors (67279801409).

1143566311231 is a wasteful number, since it uses less digits than its factorization.

1143566311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621953.

The product of its digits is 38880, while the sum is 37.

The spelling of 1143566311231 in words is "one trillion, one hundred forty-three billion, five hundred sixty-six million, three hundred eleven thousand, two hundred thirty-one".