1051231143 has 16 divisors (see below), whose sum is σ = 1431843840. Its totient is φ = 685827264.

The previous prime is 1051231133. The next prime is 1051231147. The reversal of 1051231143 is 3411321501.

It is not a de Polignac number, because 1051231143 - 2⁶ = 1051231079 is a prime.

It is a super-2 number, since 2×1051231143² = 2210173832026172898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051231147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26155 + ... + 52787.

It is an arithmetic number, because the mean of its divisors is an integer number (89490240).

Almost surely, 2^1051231143 is an apocalyptic number.

1051231143 is a deficient number, since it is larger than the sum of its proper divisors (380612697).

1051231143 is a wasteful number, since it uses less digits than its factorization.

1051231143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26918.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1051231143 is about 32422.6948756577. The cubic root of 1051231143 is about 1016.7934490402.

Adding to 1051231143 its reverse (3411321501), we get a palindrome (4462552644).

The spelling of 1051231143 in words is "one billion, fifty-one million, two hundred thirty-one thousand, one hundred forty-three".