123141631 has 4 divisors (see below), whose sum is σ = 125465112. Its totient is φ = 120818152.

The previous prime is 123141617. The next prime is 123141647. The reversal of 123141631 is 136141321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136141321 = 17 ⋅8008313.

It is a cyclic number.

It is not a de Polignac number, because 123141631 - 2¹⁵ = 123108863 is a prime.

It is a super-2 number, since 2×123141631² = 30327722570680322, 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 (123141611) 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, 1161661 + ... + 1161766.

It is an arithmetic number, because the mean of its divisors is an integer number (31366278).

Almost surely, 2^123141631 is an apocalyptic number.

123141631 is a deficient number, since it is larger than the sum of its proper divisors (2323481).

123141631 is an equidigital number, since it uses as much as digits as its factorization.

123141631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323480.

The product of its digits is 432, while the sum is 22.

The square root of 123141631 is about 11096.9198879689. The cubic root of 123141631 is about 497.5097929943.

Adding to 123141631 its reverse (136141321), we get a palindrome (259282952).

The spelling of 123141631 in words is "one hundred twenty-three million, one hundred forty-one thousand, six hundred thirty-one".