1142211031 has 16 divisors (see below), whose sum is σ = 1271481120. Its totient is φ = 1019445120.

The previous prime is 1142211019. The next prime is 1142211041. The reversal of 1142211031 is 1301122411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142211031 is a prime.

It is a super-2 number, since 2×1142211031² = 2609292078676165922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142210996 and 1142211014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34581 + ... + 58993.

It is an arithmetic number, because the mean of its divisors is an integer number (79467570).

Almost surely, 2^1142211031 is an apocalyptic number.

1142211031 is a deficient number, since it is larger than the sum of its proper divisors (129270089).

1142211031 is a wasteful number, since it uses less digits than its factorization.

1142211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24546.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1142211031 is about 33796.6127148861. The cubic root of 1142211031 is about 1045.3188532742.

Adding to 1142211031 its reverse (1301122411), we get a palindrome (2443333442).

The spelling of 1142211031 in words is "one billion, one hundred forty-two million, two hundred eleven thousand, thirty-one".