101142031 has 4 divisors (see below), whose sum is σ = 101880432. Its totient is φ = 100403632.

The previous prime is 101142029. The next prime is 101142037. The reversal of 101142031 is 130241101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130241101 = 997 ⋅130633.

It is a cyclic number.

It is not a de Polignac number, because 101142031 - 2¹ = 101142029 is a prime.

It is a super-2 number, since 2×101142031² = 20459420869609922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101142037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368995 + ... + 369268.

It is an arithmetic number, because the mean of its divisors is an integer number (25470108).

Almost surely, 2^101142031 is an apocalyptic number.

101142031 is a deficient number, since it is larger than the sum of its proper divisors (738401).

101142031 is an equidigital number, since it uses as much as digits as its factorization.

101142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738400.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 101142031 is about 10056.9394449803. The cubic root of 101142031 is about 465.9191454702.

Adding to 101142031 its reverse (130241101), we get a palindrome (231383132).

The spelling of 101142031 in words is "one hundred one million, one hundred forty-two thousand, thirty-one".