623141261 has 4 divisors (see below), whose sum is σ = 643242624. Its totient is φ = 603039900.

The previous prime is 623141257. The next prime is 623141263. The reversal of 623141261 is 162141326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 623141261 - 2² = 623141257 is a prime.

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 623141261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623141263) 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, 10050635 + ... + 10050696.

It is an arithmetic number, because the mean of its divisors is an integer number (160810656).

Almost surely, 2^623141261 is an apocalyptic number.

It is an amenable number.

623141261 is a deficient number, since it is larger than the sum of its proper divisors (20101363).

623141261 is a wasteful number, since it uses less digits than its factorization.

623141261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101362.

The product of its digits is 1728, while the sum is 26.

The square root of 623141261 is about 24962.7975395387. The cubic root of 623141261 is about 854.1395586633.

Adding to 623141261 its reverse (162141326), we get a palindrome (785282587).

The spelling of 623141261 in words is "six hundred twenty-three million, one hundred forty-one thousand, two hundred sixty-one".