141831631 has 4 divisors (see below), whose sum is σ = 142315992. Its totient is φ = 141347272.

The previous prime is 141831617. The next prime is 141831653. The reversal of 141831631 is 136138141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136138141 = 2659 ⋅51199.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141831631 is a prime.

It is a super-2 number, since 2×141831631² = 40232423104240322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 141831631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141831661) 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, 241741 + ... + 242326.

It is an arithmetic number, because the mean of its divisors is an integer number (35578998).

Almost surely, 2^141831631 is an apocalyptic number.

141831631 is a deficient number, since it is larger than the sum of its proper divisors (484361).

141831631 is an equidigital number, since it uses as much as digits as its factorization.

141831631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484360.

The product of its digits is 1728, while the sum is 28.

The square root of 141831631 is about 11909.3085861439. The cubic root of 141831631 is about 521.5040662496.

Adding to 141831631 its reverse (136138141), we get a palindrome (277969772).

The spelling of 141831631 in words is "one hundred forty-one million, eight hundred thirty-one thousand, six hundred thirty-one".