1623631234 has 16 divisors (see below), whose sum is σ = 2493694368. Its totient is φ = 792614592.

The previous prime is 1623631213. The next prime is 1623631237. The reversal of 1623631234 is 4321363261.

It is a junction number, because it is equal to n+sod(n) for n = 1623631196 and 1623631205.

It is not an unprimeable number, because it can be changed into a prime (1623631237) 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, 38472 + ... + 68755.

It is an arithmetic number, because the mean of its divisors is an integer number (155855898).

Almost surely, 2^1623631234 is an apocalyptic number.

1623631234 is a deficient number, since it is larger than the sum of its proper divisors (870063134).

1623631234 is a wasteful number, since it uses less digits than its factorization.

1623631234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107409.

The product of its digits is 15552, while the sum is 31.

The square root of 1623631234 is about 40294.3077121322. The cubic root of 1623631234 is about 1175.3371560610.

Adding to 1623631234 its reverse (4321363261), we get a palindrome (5944994495).

The spelling of 1623631234 in words is "one billion, six hundred twenty-three million, six hundred thirty-one thousand, two hundred thirty-four".