105051031 has 4 divisors (see below), whose sum is σ = 105082272. Its totient is φ = 105019792.

The previous prime is 105051017. The next prime is 105051049. The reversal of 105051031 is 130150501.

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 105051031 - 2⁵ = 105050999 is a prime.

It is a super-2 number, since 2×105051031² = 22071438228325922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105050996 and 105051014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105051091) 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, 9871 + ... + 17536.

It is an arithmetic number, because the mean of its divisors is an integer number (26270568).

Almost surely, 2^105051031 is an apocalyptic number.

105051031 is a deficient number, since it is larger than the sum of its proper divisors (31241).

105051031 is an equidigital number, since it uses as much as digits as its factorization.

105051031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31240.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 105051031 is about 10249.4405213163. The cubic root of 105051031 is about 471.8458137936.

The spelling of 105051031 in words is "one hundred five million, fifty-one thousand, thirty-one".