1142031131 has 2 divisors, whose sum is σ = 1142031132. Its totient is φ = 1142031130.

The previous prime is 1142031073. The next prime is 1142031133. The reversal of 1142031131 is 1311302411.

It is a strong prime.

It is an emirp because it is prime and its reverse (1311302411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142031131 - 2²⁶ = 1074922267 is a prime.

It is a super-2 number, since 2×1142031131² = 2608470208346278322, which contains 22 as substring.

Together with 1142031133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1142031133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571015565 + 571015566.

It is an arithmetic number, because the mean of its divisors is an integer number (571015566).

Almost surely, 2^1142031131 is an apocalyptic number.

1142031131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142031131 is an equidigital number, since it uses as much as digits as its factorization.

1142031131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1142031131 is about 33793.9511007517. The cubic root of 1142031131 is about 1045.2639706152.

Adding to 1142031131 its reverse (1311302411), we get a palindrome (2453333542).

The spelling of 1142031131 in words is "one billion, one hundred forty-two million, thirty-one thousand, one hundred thirty-one".