142223031 has 6 divisors (see below), whose sum is σ = 205433280. Its totient is φ = 94815348.

The previous prime is 142223027. The next prime is 142223057. The reversal of 142223031 is 130322241.

It is not a de Polignac number, because 142223031 - 2² = 142223027 is a prime.

It is a super-2 number, since 2×142223031² = 40454781093653922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142222995 and 142223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142223021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7901271 + ... + 7901288.

It is an arithmetic number, because the mean of its divisors is an integer number (34238880).

Almost surely, 2^142223031 is an apocalyptic number.

142223031 is a deficient number, since it is larger than the sum of its proper divisors (63210249).

142223031 is a wasteful number, since it uses less digits than its factorization.

142223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15802565 (or 15802562 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 142223031 is about 11925.7297889899. The cubic root of 142223031 is about 521.9833416096.

Adding to 142223031 its reverse (130322241), we get a palindrome (272545272).

The spelling of 142223031 in words is "one hundred forty-two million, two hundred twenty-three thousand, thirty-one".