142511031 has 12 divisors (see below), whose sum is σ = 221684008. Its totient is φ = 87699024.

The previous prime is 142510997. The next prime is 142511071. The reversal of 142511031 is 130115241.

It is not a de Polignac number, because 142511031 - 2⁹ = 142510519 is a prime.

It is a super-2 number, since 2×142511031² = 40618787913365922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142510995 and 142511013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142511071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608905 + ... + 609138.

Almost surely, 2^142511031 is an apocalyptic number.

142511031 is a deficient number, since it is larger than the sum of its proper divisors (79172977).

142511031 is a wasteful number, since it uses less digits than its factorization.

142511031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218062 (or 1218059 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 142511031 is about 11937.7984151183. The cubic root of 142511031 is about 522.3354408028.

Adding to 142511031 its reverse (130115241), we get a palindrome (272626272).

The spelling of 142511031 in words is "one hundred forty-two million, five hundred eleven thousand, thirty-one".