1143006831 has 6 divisors (see below), whose sum is σ = 1651009880. Its totient is φ = 762004548.

The previous prime is 1143006803. The next prime is 1143006853. The reversal of 1143006831 is 1386003411.

It is not a de Polignac number, because 1143006831 - 2¹⁷ = 1142875759 is a prime.

It is a super-2 number, since 2×1143006831² = 2612929231425325122, 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 = 1143006795 and 1143006804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143006881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63500371 + ... + 63500388.

Almost surely, 2^1143006831 is an apocalyptic number.

1143006831 is a deficient number, since it is larger than the sum of its proper divisors (508003049).

1143006831 is a wasteful number, since it uses less digits than its factorization.

1143006831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127000765 (or 127000762 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1143006831 is about 33808.3840341416. The cubic root of 1143006831 is about 1045.5615613797.

The spelling of 1143006831 in words is "one billion, one hundred forty-three million, six thousand, eight hundred thirty-one".