1012143231 has 12 divisors (see below), whose sum is σ = 1594892520. Its totient is φ = 613420080.

The previous prime is 1012143227. The next prime is 1012143233. The reversal of 1012143231 is 1323412101.

It is not a de Polignac number, because 1012143231 - 2² = 1012143227 is a prime.

It is a super-2 number, since 2×1012143231² = 2048867840118238722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012143233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5111736 + ... + 5111933.

It is an arithmetic number, because the mean of its divisors is an integer number (132907710).

Almost surely, 2^1012143231 is an apocalyptic number.

1012143231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012143231 is a deficient number, since it is larger than the sum of its proper divisors (582749289).

1012143231 is a wasteful number, since it uses less digits than its factorization.

1012143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223686 (or 10223683 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1012143231 is about 31814.1985754788. The cubic root of 1012143231 is about 1004.0314690829.

Adding to 1012143231 its reverse (1323412101), we get a palindrome (2335555332).

The spelling of 1012143231 in words is "one billion, twelve million, one hundred forty-three thousand, two hundred thirty-one".