1143523031 has 8 divisors (see below), whose sum is σ = 1307089824. Its totient is φ = 980007840.

The previous prime is 1143523013. The next prime is 1143523081. The reversal of 1143523031 is 1303253411.

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

It is not a de Polignac number, because 1143523031 - 2⁶ = 1143522967 is a prime.

It is a super-2 number, since 2×1143523031² = 2615289844854853922, 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 = 1143522988 and 1143523006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143523081) 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, 70901 + ... + 85521.

It is an arithmetic number, because the mean of its divisors is an integer number (163386228).

Almost surely, 2^1143523031 is an apocalyptic number.

1143523031 is a deficient number, since it is larger than the sum of its proper divisors (163566793).

1143523031 is a wasteful number, since it uses less digits than its factorization.

1143523031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25801.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1143523031 is about 33816.0173734282. The cubic root of 1143523031 is about 1045.7189350819.

Adding to 1143523031 its reverse (1303253411), we get a palindrome (2446776442).

The spelling of 1143523031 in words is "one billion, one hundred forty-three million, five hundred twenty-three thousand, thirty-one".