142031131 has 6 divisors (see below), whose sum is σ = 156116996. Its totient is φ = 129119100.

The previous prime is 142031081. The next prime is 142031143. The reversal of 142031131 is 131130241.

It is not a de Polignac number, because 142031131 - 2¹³ = 142022939 is a prime.

It is a super-2 number, since 2×142031131² = 40345684346278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142031161) 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, 586785 + ... + 587026.

Almost surely, 2^142031131 is an apocalyptic number.

142031131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142031131 is a deficient number, since it is larger than the sum of its proper divisors (14085865).

142031131 is a wasteful number, since it uses less digits than its factorization.

142031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173833 (or 1173822 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 142031131 is about 11917.6814439722. The cubic root of 142031131 is about 521.7484671112.

Adding to 142031131 its reverse (131130241), we get a palindrome (273161372).

The spelling of 142031131 in words is "one hundred forty-two million, thirty-one thousand, one hundred thirty-one".