105031505431 has 4 divisors (see below), whose sum is σ = 105046631352. Its totient is φ = 105016379512.

The previous prime is 105031505429. The next prime is 105031505459. The reversal of 105031505431 is 134505130501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134505130501 = 7 ⋅19215018643.

It is a cyclic number.

It is not a de Polignac number, because 105031505431 - 2¹ = 105031505429 is a prime.

It is a super-2 number, since 2×105031505431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105031505431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105031508431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7552540 + ... + 7566433.

It is an arithmetic number, because the mean of its divisors is an integer number (26261657838).

Almost surely, 2^105031505431 is an apocalyptic number.

105031505431 is a deficient number, since it is larger than the sum of its proper divisors (15125921).

105031505431 is an equidigital number, since it uses as much as digits as its factorization.

105031505431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15125920.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 105031505431 its reverse (134505130501), we get a palindrome (239536635932).

The spelling of 105031505431 in words is "one hundred five billion, thirty-one million, five hundred five thousand, four hundred thirty-one".