100549031 has 8 divisors (see below), whose sum is σ = 114459264. Its totient is φ = 87433720.

The previous prime is 100548979. The next prime is 100549049. The reversal of 100549031 is 130945001.

It is a happy number.

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

It is not a de Polignac number, because 100549031 - 2⁶ = 100548967 is a prime.

It is a super-2 number, since 2×100549031² = 20220215270077922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100548988 and 100549006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100549231) 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, 198461 + ... + 198966.

It is an arithmetic number, because the mean of its divisors is an integer number (14307408).

Almost surely, 2^100549031 is an apocalyptic number.

100549031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100549031 is a deficient number, since it is larger than the sum of its proper divisors (13910233).

100549031 is a wasteful number, since it uses less digits than its factorization.

100549031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397461.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 100549031 is about 10027.4139737023. The cubic root of 100549031 is about 465.0067922082.

The spelling of 100549031 in words is "one hundred million, five hundred forty-nine thousand, thirty-one".