1623500231 has 4 divisors (see below), whose sum is σ = 1623666864. Its totient is φ = 1623333600.

The previous prime is 1623500209. The next prime is 1623500237. The reversal of 1623500231 is 1320053261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1623500231 - 2²² = 1619305927 is a prime.

It is a super-2 number, since 2×1623500231² = 5271506000114106722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1623500197 and 1623500206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623500237) 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, 67730 + ... + 88511.

It is an arithmetic number, because the mean of its divisors is an integer number (405916716).

Almost surely, 2^1623500231 is an apocalyptic number.

1623500231 is a deficient number, since it is larger than the sum of its proper divisors (166633).

1623500231 is a wasteful number, since it uses less digits than its factorization.

1623500231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166632.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1623500231 is about 40292.6821023371. The cubic root of 1623500231 is about 1175.3055444422.

Adding to 1623500231 its reverse (1320053261), we get a palindrome (2943553492).

The spelling of 1623500231 in words is "one billion, six hundred twenty-three million, five hundred thousand, two hundred thirty-one".