100401193923 has 16 divisors (see below), whose sum is σ = 139748716800. Its totient is φ = 63996404384.

The previous prime is 100401193873. The next prime is 100401194057. The reversal of 100401193923 is 329391104001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100401193923 - 2⁸ = 100401193667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100401193423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150873 + ... + 472826.

It is an arithmetic number, because the mean of its divisors is an integer number (8734294800).

Almost surely, 2^100401193923 is an apocalyptic number.

100401193923 is a deficient number, since it is larger than the sum of its proper divisors (39347522877).

100401193923 is a wasteful number, since it uses less digits than its factorization.

100401193923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626058.

The product of its (nonzero) digits is 5832, while the sum is 33.

Adding to 100401193923 its reverse (329391104001), we get a palindrome (429792297924).

The spelling of 100401193923 in words is "one hundred billion, four hundred one million, one hundred ninety-three thousand, nine hundred twenty-three".