2563623831 has 8 divisors (see below), whose sum is σ = 3423798784. Its totient is φ = 1706265720.

The previous prime is 2563623827. The next prime is 2563623869. The reversal of 2563623831 is 1383263652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2563623831 - 2² = 2563623827 is a prime.

It is a super-2 number, since 2×2563623831² = 13144334293742233122, 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 2563623831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563623331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702085 + ... + 705726.

It is an arithmetic number, because the mean of its divisors is an integer number (427974848).

Almost surely, 2^2563623831 is an apocalyptic number.

2563623831 is a deficient number, since it is larger than the sum of its proper divisors (860174953).

2563623831 is a wasteful number, since it uses less digits than its factorization.

2563623831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408421.

The product of its digits is 155520, while the sum is 39.

The square root of 2563623831 is about 50632.2410228898. The cubic root of 2563623831 is about 1368.6259388234.

The spelling of 2563623831 in words is "two billion, five hundred sixty-three million, six hundred twenty-three thousand, eight hundred thirty-one".