1142023431 has 8 divisors (see below), whose sum is σ = 1525160320. Its totient is φ = 760117752.

The previous prime is 1142023429. The next prime is 1142023453. The reversal of 1142023431 is 1343202411.

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

It is not a de Polignac number, because 1142023431 - 2¹ = 1142023429 is a prime.

It is a super-2 number, since 2×1142023431² = 2608435033906023522, 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 = 1142023398 and 1142023407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142023031) 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, 305635 + ... + 309348.

It is an arithmetic number, because the mean of its divisors is an integer number (190645040).

Almost surely, 2^1142023431 is an apocalyptic number.

1142023431 is a deficient number, since it is larger than the sum of its proper divisors (383136889).

1142023431 is an equidigital number, since it uses as much as digits as its factorization.

1142023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615605.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1142023431 is about 33793.8371748459. The cubic root of 1142023431 is about 1045.2616214234.

Adding to 1142023431 its reverse (1343202411), we get a palindrome (2485225842).

The spelling of 1142023431 in words is "one billion, one hundred forty-two million, twenty-three thousand, four hundred thirty-one".