100142631 has 12 divisors (see below), whose sum is σ = 153159552. Its totient is φ = 62834496.

The previous prime is 100142593. The next prime is 100142659. The reversal of 100142631 is 136241001.

It is a happy number.

It is not a de Polignac number, because 100142631 - 2⁷ = 100142503 is a prime.

It is a super-2 number, since 2×100142631² = 20057093087204322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100142671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327111 + ... + 327416.

It is an arithmetic number, because the mean of its divisors is an integer number (12763296).

Almost surely, 2^100142631 is an apocalyptic number.

100142631 is a deficient number, since it is larger than the sum of its proper divisors (53016921).

100142631 is a wasteful number, since it uses less digits than its factorization.

100142631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654550 (or 654547 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 100142631 is about 10007.1290088616. The cubic root of 100142631 is about 464.3794566782.

Adding to 100142631 its reverse (136241001), we get a palindrome (236383632).

The spelling of 100142631 in words is "one hundred million, one hundred forty-two thousand, six hundred thirty-one".