100021023311431 has 4 divisors (see below), whose sum is σ = 100042040551600. Its totient is φ = 100000006071264.

The previous prime is 100021023311387. The next prime is 100021023311459. The reversal of 100021023311431 is 134113320120001.

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 100021023311431 - 2⁷ = 100021023311303 is a prime.

It is a super-2 number, since 2×100021023311431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021023011431) 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, 10508612946 + ... + 10508622463.

It is an arithmetic number, because the mean of its divisors is an integer number (25010510137900).

Almost surely, 2^{100021023311431} is an apocalyptic number.

100021023311431 is a deficient number, since it is larger than the sum of its proper divisors (21017240169).

100021023311431 is an equidigital number, since it uses as much as digits as its factorization.

100021023311431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21017240168.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 100021023311431 its reverse (134113320120001), we get a palindrome (234134343431432).

The spelling of 100021023311431 in words is "one hundred trillion, twenty-one billion, twenty-three million, three hundred eleven thousand, four hundred thirty-one".