142351331 has 4 divisors (see below), whose sum is σ = 142377312. Its totient is φ = 142325352.

The previous prime is 142351309. The next prime is 142351351. The reversal of 142351331 is 133153241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142351331 is a prime.

It is a super-2 number, since 2×142351331² = 40527802874943122, 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 = 142351297 and 142351306.

It is not an unprimeable number, because it can be changed into a prime (142351351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211 + ... + 16916.

It is an arithmetic number, because the mean of its divisors is an integer number (35594328).

Almost surely, 2^142351331 is an apocalyptic number.

142351331 is a deficient number, since it is larger than the sum of its proper divisors (25981).

142351331 is an equidigital number, since it uses as much as digits as its factorization.

142351331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25980.

The product of its digits is 1080, while the sum is 23.

The square root of 142351331 is about 11931.1077021373. The cubic root of 142351331 is about 522.1402555642.

The spelling of 142351331 in words is "one hundred forty-two million, three hundred fifty-one thousand, three hundred thirty-one".