1020013143 has 32 divisors (see below), whose sum is σ = 1443614400. Its totient is φ = 639614976.

The previous prime is 1020013139. The next prime is 1020013207. The reversal of 1020013143 is 3413100201.

It is not a de Polignac number, because 1020013143 - 2² = 1020013139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020013123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723223 + ... + 724631.

It is an arithmetic number, because the mean of its divisors is an integer number (45112950).

Almost surely, 2^1020013143 is an apocalyptic number.

1020013143 is a deficient number, since it is larger than the sum of its proper divisors (423601257).

1020013143 is a wasteful number, since it uses less digits than its factorization.

1020013143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1020013143 is about 31937.6446063262. The cubic root of 1020013143 is about 1006.6270330848.

Adding to 1020013143 its reverse (3413100201), we get a palindrome (4433113344).

The spelling of 1020013143 in words is "one billion, twenty million, thirteen thousand, one hundred forty-three".