1143608831 has 8 divisors (see below), whose sum is σ = 1155291984. Its totient is φ = 1131944320.

The previous prime is 1143608801. The next prime is 1143608833. The reversal of 1143608831 is 1388063411.

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

It is a cyclic number.

It is not a de Polignac number, because 1143608831 - 2¹⁴ = 1143592447 is a prime.

It is a super-2 number, since 2×1143608831² = 2615682316682373122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143608791 and 1143608800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143608833) 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, 141701 + ... + 149553.

It is an arithmetic number, because the mean of its divisors is an integer number (144411498).

Almost surely, 2^1143608831 is an apocalyptic number.

1143608831 is a deficient number, since it is larger than the sum of its proper divisors (11683153).

1143608831 is a wasteful number, since it uses less digits than its factorization.

1143608831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9321.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1143608831 is about 33817.2859792148. The cubic root of 1143608831 is about 1045.7450883055.

The spelling of 1143608831 in words is "one billion, one hundred forty-three million, six hundred eight thousand, eight hundred thirty-one".