100223431 has 8 divisors (see below), whose sum is σ = 124953984. Its totient is φ = 78096120.

The previous prime is 100223399. The next prime is 100223437. The reversal of 100223431 is 134322001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100223431 - 2⁵ = 100223399 is a prime.

It is a super-2 number, since 2×100223431² = 20089472242823522, which 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 (100223437) 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, 650725 + ... + 650878.

It is an arithmetic number, because the mean of its divisors is an integer number (15619248).

Almost surely, 2^100223431 is an apocalyptic number.

100223431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100223431 is a deficient number, since it is larger than the sum of its proper divisors (24730553).

100223431 is a wasteful number, since it uses less digits than its factorization.

100223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301621.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 100223431 is about 10011.1653167851. The cubic root of 100223431 is about 464.5043178312.

Adding to 100223431 its reverse (134322001), we get a palindrome (234545432).

The spelling of 100223431 in words is "one hundred million, two hundred twenty-three thousand, four hundred thirty-one".