105145031 has 8 divisors (see below), whose sum is σ = 111660720. Its totient is φ = 98727552.

The previous prime is 105145013. The next prime is 105145081. The reversal of 105145031 is 130541501.

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 105145031 - 2⁶ = 105144967 is a prime.

It is a super-2 number, since 2×105145031² = 22110955087981922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105144994 and 105145012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105145081) 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, 22340 + ... + 26633.

It is an arithmetic number, because the mean of its divisors is an integer number (13957590).

Almost surely, 2^105145031 is an apocalyptic number.

105145031 is a deficient number, since it is larger than the sum of its proper divisors (6515689).

105145031 is a wasteful number, since it uses less digits than its factorization.

105145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49105.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 105145031 is about 10254.0251121206. The cubic root of 105145031 is about 471.9865082206.

Adding to 105145031 its reverse (130541501), we get a palindrome (235686532).

The spelling of 105145031 in words is "one hundred five million, one hundred forty-five thousand, thirty-one".