1142331431 has 8 divisors (see below), whose sum is σ = 1219843200. Its totient is φ = 1067361120.

The previous prime is 1142331413. The next prime is 1142331467. The reversal of 1142331431 is 1341332411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142331431 - 2¹⁸ = 1142069287 is a prime.

It is a super-2 number, since 2×1142331431² = 2609842196501015522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142331397 and 1142331406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142331401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634436 + ... + 636233.

It is an arithmetic number, because the mean of its divisors is an integer number (152480400).

Almost surely, 2^1142331431 is an apocalyptic number.

1142331431 is a deficient number, since it is larger than the sum of its proper divisors (77511769).

1142331431 is a wasteful number, since it uses less digits than its factorization.

1142331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270729.

The product of its digits is 864, while the sum is 23.

The square root of 1142331431 is about 33798.3939115456. The cubic root of 1142331431 is about 1045.3555808621.

Adding to 1142331431 its reverse (1341332411), we get a palindrome (2483663842).

The spelling of 1142331431 in words is "one billion, one hundred forty-two million, three hundred thirty-one thousand, four hundred thirty-one".